97878251024 has 40 divisors (see below), whose sum is σ = 199649468640. Its totient is φ = 46356565248.

The previous prime is 97878250993. The next prime is 97878251041. The reversal of 97878251024 is 42015287879.

It is a Cunningham number, because it is equal to 312855²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2483279 + ... + 2522385.

It is an arithmetic number, because the mean of its divisors is an integer number (4991236716).

Almost surely, 2^97878251024 is an apocalyptic number.

It is an amenable number.

97878251024 is an abundant number, since it is smaller than the sum of its proper divisors (101771217616).

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

97878251024 is a wasteful number, since it uses less digits than its factorization.

97878251024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47367 (or 47361 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 97878251024 in words is "ninety-seven billion, eight hundred seventy-eight million, two hundred fifty-one thousand, twenty-four".