77943181092 has 48 divisors (see below), whose sum is σ = 207922025472. Its totient is φ = 22261600800.

The previous prime is 77943181081. The next prime is 77943181139. The reversal of 77943181092 is 29018134977.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 76753 + ... + 402215.

It is an arithmetic number, because the mean of its divisors is an integer number (4331708864).

Almost surely, 2^77943181092 is an apocalyptic number.

It is an amenable number.

77943181092 is an abundant number, since it is smaller than the sum of its proper divisors (129978844380).

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

77943181092 is a wasteful number, since it uses less digits than its factorization.

77943181092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328328 (or 328326 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 77943181092 in words is "seventy-seven billion, nine hundred forty-three million, one hundred eighty-one thousand, ninety-two".