68572540621 has 8 divisors (see below), whose sum is σ = 75564732320. Its totient is φ = 61825689072.

The previous prime is 68572540573. The next prime is 68572540639. The reversal of 68572540621 is 12604527586.

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

It is a cyclic number.

It is not a de Polignac number, because 68572540621 - 2²⁵ = 68538986189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68572540681) 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, 61334451 + ... + 61335568.

It is an arithmetic number, because the mean of its divisors is an integer number (9445591540).

Almost surely, 2^68572540621 is an apocalyptic number.

It is an amenable number.

68572540621 is a deficient number, since it is larger than the sum of its proper divisors (6992191699).

68572540621 is a wasteful number, since it uses less digits than its factorization.

68572540621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122670075.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 68572540621 in words is "sixty-eight billion, five hundred seventy-two million, five hundred forty thousand, six hundred twenty-one".