256689716098 has 16 divisors (see below), whose sum is σ = 389044521216. Its totient is φ = 127009951200.

The previous prime is 256689716089. The next prime is 256689716111. The reversal of 256689716098 is 890617986652.

It is a super-2 number, since 2×256689716098² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139578 + ... + 729973.

It is an arithmetic number, because the mean of its divisors is an integer number (24315282576).

Almost surely, 2^256689716098 is an apocalyptic number.

256689716098 is a deficient number, since it is larger than the sum of its proper divisors (132354805118).

256689716098 is a wasteful number, since it uses less digits than its factorization.

256689716098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871089.

The product of its (nonzero) digits is 78382080, while the sum is 67.

The spelling of 256689716098 in words is "two hundred fifty-six billion, six hundred eighty-nine million, seven hundred sixteen thousand, ninety-eight".