77958180090 has 96 divisors (see below), whose sum is σ = 243839157120. Its totient is φ = 16881167232.

The previous prime is 77958180089. The next prime is 77958180173. The reversal of 77958180090 is 9008185977.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3244429 + ... + 3268368.

It is an arithmetic number, because the mean of its divisors is an integer number (2539991220).

Almost surely, 2^77958180090 is an apocalyptic number.

77958180090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77958180090 is an abundant number, since it is smaller than the sum of its proper divisors (165880977030).

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

77958180090 is a wasteful number, since it uses less digits than its factorization.

77958180090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512836 (or 6512833 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 77958180090 in words is "seventy-seven billion, nine hundred fifty-eight million, one hundred eighty thousand, ninety".