78037172488 has 16 divisors (see below), whose sum is σ = 159621489360. Its totient is φ = 35471442000.

The previous prime is 78037172467. The next prime is 78037172509. The reversal of 78037172488 is 88427173087.

It is an interprime number because it is at equal distance from previous prime (78037172467) and next prime (78037172509).

It is a super-2 number, since 2×78037172488² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443392938 + ... + 443393113.

It is an arithmetic number, because the mean of its divisors is an integer number (9976343085).

Almost surely, 2^78037172488 is an apocalyptic number.

It is an amenable number.

78037172488 is an abundant number, since it is smaller than the sum of its proper divisors (81584316872).

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

78037172488 is a wasteful number, since it uses less digits than its factorization.

78037172488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886786068 (or 886786064 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 55.

The spelling of 78037172488 in words is "seventy-eight billion, thirty-seven million, one hundred seventy-two thousand, four hundred eighty-eight".