78900155092 has 24 divisors (see below), whose sum is σ = 150657458112. Its totient is φ = 35856590400.

The previous prime is 78900154969. The next prime is 78900155129. The reversal of 78900155092 is 29055100987.

It is a congruent number.

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, 49617 + ... + 400327.

It is an arithmetic number, because the mean of its divisors is an integer number (6277394088).

Almost surely, 2^78900155092 is an apocalyptic number.

It is an amenable number.

78900155092 is a deficient number, since it is larger than the sum of its proper divisors (71757303020).

78900155092 is a wasteful number, since it uses less digits than its factorization.

78900155092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355839 (or 355837 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 78900155092 in words is "seventy-eight billion, nine hundred million, one hundred fifty-five thousand, ninety-two".