68600061651021 has 16 divisors (see below), whose sum is σ = 92082294892800. Its totient is φ = 45425612590400.

The previous prime is 68600061651007. The next prime is 68600061651029. The reversal of 68600061651021 is 12015616000686.

It is a cyclic number.

It is not a de Polignac number, because 68600061651021 - 2²² = 68600057456717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68600061651029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23705596 + ... + 26441546.

It is an arithmetic number, because the mean of its divisors is an integer number (5755143430800).

Almost surely, 2^{68600061651021} is an apocalyptic number.

It is an amenable number.

68600061651021 is a deficient number, since it is larger than the sum of its proper divisors (23482233241779).

68600061651021 is a wasteful number, since it uses less digits than its factorization.

68600061651021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792196.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 68600061651021 in words is "sixty-eight trillion, six hundred billion, sixty-one million, six hundred fifty-one thousand, twenty-one".