97947809628031 has 4 divisors (see below), whose sum is σ = 106852155957864. Its totient is φ = 89043463298200.

The previous prime is 97947809628029. The next prime is 97947809628061. The reversal of 97947809628031 is 13082690874979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97947809628031 - 2¹ = 97947809628029 is a prime.

It is a super-2 number, since 2×97947809628031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97947809628001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4452173164900 + ... + 4452173164921.

It is an arithmetic number, because the mean of its divisors is an integer number (26713038989466).

Almost surely, 2^{97947809628031} is an apocalyptic number.

97947809628031 is a deficient number, since it is larger than the sum of its proper divisors (8904346329833).

97947809628031 is a wasteful number, since it uses less digits than its factorization.

97947809628031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8904346329832.

The product of its (nonzero) digits is 329204736, while the sum is 73.

The spelling of 97947809628031 in words is "ninety-seven trillion, nine hundred forty-seven billion, eight hundred nine million, six hundred twenty-eight thousand, thirty-one".