78749098874 has 32 divisors (see below), whose sum is σ = 123805933056. Its totient is φ = 37536750720.

The previous prime is 78749098853. The next prime is 78749098891. The reversal of 78749098874 is 47889094787.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78749098798 and 78749098807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523934 + ... + 657270.

It is an arithmetic number, because the mean of its divisors is an integer number (3868935408).

Almost surely, 2^78749098874 is an apocalyptic number.

78749098874 is a deficient number, since it is larger than the sum of its proper divisors (45056834182).

78749098874 is a wasteful number, since it uses less digits than its factorization.

78749098874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133550.

The product of its (nonzero) digits is 227598336, while the sum is 71.

The spelling of 78749098874 in words is "seventy-eight billion, seven hundred forty-nine million, ninety-eight thousand, eight hundred seventy-four".