78492523818 has 16 divisors (see below), whose sum is σ = 157009927680. Its totient is φ = 26160027936.

The previous prime is 78492523799. The next prime is 78492523849. The reversal of 78492523818 is 81832529487.

It is a super-4 number, since 4×78492523818⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 995530 + ... + 1071477.

It is an arithmetic number, because the mean of its divisors is an integer number (9813120480).

Almost surely, 2^78492523818 is an apocalyptic number.

78492523818 is an abundant number, since it is smaller than the sum of its proper divisors (78517403862).

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

78492523818 is a wasteful number, since it uses less digits than its factorization.

78492523818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073341.

The product of its digits is 7741440, while the sum is 57.

The spelling of 78492523818 in words is "seventy-eight billion, four hundred ninety-two million, five hundred twenty-three thousand, eight hundred eighteen".