68736658798025 has 12 divisors (see below), whose sum is σ = 88172541631500. Its totient is φ = 53093143346880.

The previous prime is 68736658798009. The next prime is 68736658798127. The reversal of 68736658798025 is 52089785663786.

It can be written as a sum of positive squares in 6 ways, for example, as 98814036409 + 68637844761616 = 314347^2 + 8284796^2 .

It is not a de Polignac number, because 68736658798025 - 2⁴ = 68736658798009 is a prime.

It is a super-2 number, since 2×68736658798025² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

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, 47404591550 + ... + 47404592999.

It is an arithmetic number, because the mean of its divisors is an integer number (7347711802625).

Almost surely, 2^{68736658798025} is an apocalyptic number.

It is an amenable number.

68736658798025 is a deficient number, since it is larger than the sum of its proper divisors (19435882833475).

68736658798025 is a wasteful number, since it uses less digits than its factorization.

68736658798025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94809184588 (or 94809184583 counting only the distinct ones).

The product of its (nonzero) digits is 7315660800, while the sum is 80.

The spelling of 68736658798025 in words is "sixty-eight trillion, seven hundred thirty-six billion, six hundred fifty-eight million, seven hundred ninety-eight thousand, twenty-five".