972666590021 has 16 divisors (see below), whose sum is σ = 1113238627200. Its totient is φ = 832500047808.

The previous prime is 972666590017. The next prime is 972666590081. The reversal of 972666590021 is 120095666279.

It is a cyclic number.

It is not a de Polignac number, because 972666590021 - 2² = 972666590017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972666590081) 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, 22280411 + ... + 22324023.

It is an arithmetic number, because the mean of its divisors is an integer number (69577414200).

Almost surely, 2^972666590021 is an apocalyptic number.

It is an amenable number.

972666590021 is a deficient number, since it is larger than the sum of its proper divisors (140572037179).

972666590021 is a wasteful number, since it uses less digits than its factorization.

972666590021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48188.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 972666590021 in words is "nine hundred seventy-two billion, six hundred sixty-six million, five hundred ninety thousand, twenty-one".