68897212553664 has 84 divisors (see below), whose sum is σ = 215434276395000. Its totient is φ = 20877943196160.

The previous prime is 68897212553651. The next prime is 68897212553677. The reversal of 68897212553664 is 46635521279886.

68897212553664 is a `hidden beast` number, since 6 + 8 + 8 + 9 + 7 + 2 + 1 + 2 + 553 + 6 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (68897212553651) and next prime (68897212553677).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 68897212553592 and 68897212553601.

It is a congruent 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, 5436958039 + ... + 5436970710.

Almost surely, 2^{68897212553664} is an apocalyptic number.

68897212553664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68897212553664 is an abundant number, since it is smaller than the sum of its proper divisors (146537063841336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68897212553664 is a wasteful number, since it uses less digits than its factorization.

68897212553664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10873928778 (or 10873928765 counting only the distinct ones).

The product of its digits is 1045094400, while the sum is 72.

The spelling of 68897212553664 in words is "sixty-eight trillion, eight hundred ninety-seven billion, two hundred twelve million, five hundred fifty-three thousand, six hundred sixty-four".