97951387984 has 40 divisors (see below), whose sum is σ = 201014087400. Its totient is φ = 46078783488.

The previous prime is 97951387981. The next prime is 97951387991. The reversal of 97951387984 is 48978315979.

It can be written as a sum of positive squares in 4 ways, for example, as 24850369600 + 73101018384 = 157640^2 + 270372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97951387981) 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, 742242 + ... + 864190.

It is an arithmetic number, because the mean of its divisors is an integer number (5025352185).

Almost surely, 2^97951387984 is an apocalyptic number.

It is an amenable number.

97951387984 is an abundant number, since it is smaller than the sum of its proper divisors (103062699416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97951387984 is a wasteful number, since it uses less digits than its factorization.

97951387984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124927 (or 124921 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 70.

The spelling of 97951387984 in words is "ninety-seven billion, nine hundred fifty-one million, three hundred eighty-seven thousand, nine hundred eighty-four".