2561430698 has 24 divisors (see below), whose sum is σ = 4296280800. Its totient is φ = 1141933248.

The previous prime is 2561430671. The next prime is 2561430727. The reversal of 2561430698 is 8960341652.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105638 + ... + 127601.

It is an arithmetic number, because the mean of its divisors is an integer number (179011700).

Almost surely, 2^2561430698 is an apocalyptic number.

2561430698 is a deficient number, since it is larger than the sum of its proper divisors (1734850102).

2561430698 is a wasteful number, since it uses less digits than its factorization.

2561430698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233294 (or 233277 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2561430698 is about 50610.5789138990. The cubic root of 2561430698 is about 1368.2355493789.

The spelling of 2561430698 in words is "two billion, five hundred sixty-one million, four hundred thirty thousand, six hundred ninety-eight".