972861620431 has 8 divisors (see below), whose sum is σ = 1045463235120. Its totient is φ = 901968279168.

The previous prime is 972861620387. The next prime is 972861620519. The reversal of 972861620431 is 134026168279.

It is a happy number.

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 972861620431 - 2¹¹ = 972861618383 is a prime.

It is a super-2 number, since 2×972861620431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972861680431) 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, 427067176 + ... + 427069453.

It is an arithmetic number, because the mean of its divisors is an integer number (130682904390).

Almost surely, 2^972861620431 is an apocalyptic number.

972861620431 is a deficient number, since it is larger than the sum of its proper divisors (72601614689).

972861620431 is a wasteful number, since it uses less digits than its factorization.

972861620431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854136713.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 972861620431 in words is "nine hundred seventy-two billion, eight hundred sixty-one million, six hundred twenty thousand, four hundred thirty-one".