78901012011112 has 32 divisors (see below), whose sum is σ = 148108387932000. Its totient is φ = 39405456216000.

The previous prime is 78901012011077. The next prime is 78901012011163. The reversal of 78901012011112 is 21111021010987.

It is a happy number.

It is a super-2 number, since 2×78901012011112² (a number of 29 digits) contains 22 as substring.

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, 43342639 + ... + 45126337.

It is an arithmetic number, because the mean of its divisors is an integer number (4628387122875).

Almost surely, 2^{78901012011112} is an apocalyptic number.

It is an amenable number.

78901012011112 is a deficient number, since it is larger than the sum of its proper divisors (69207375920888).

78901012011112 is a wasteful number, since it uses less digits than its factorization.

78901012011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790017 (or 1790013 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 34.

The spelling of 78901012011112 in words is "seventy-eight trillion, nine hundred one billion, twelve million, eleven thousand, one hundred twelve".