68637754568121 has 8 divisors (see below), whose sum is σ = 91520052006144. Its totient is φ = 45756980087760.

The previous prime is 68637754568083. The next prime is 68637754568179. The reversal of 68637754568121 is 12186545773686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68637754568121 - 2²² = 68637750373817 is a prime.

It is a super-3 number, since 3×68637754568121³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (68637754568221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380634250 + ... + 380814531.

It is an arithmetic number, because the mean of its divisors is an integer number (11440006500768).

Almost surely, 2^{68637754568121} is an apocalyptic number.

It is an amenable number.

68637754568121 is a deficient number, since it is larger than the sum of its proper divisors (22882297438023).

68637754568121 is a wasteful number, since it uses less digits than its factorization.

68637754568121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761478831.

The product of its digits is 406425600, while the sum is 69.

The spelling of 68637754568121 in words is "sixty-eight trillion, six hundred thirty-seven billion, seven hundred fifty-four million, five hundred sixty-eight thousand, one hundred twenty-one".