77090979242 has 32 divisors (see below), whose sum is σ = 121056768000. Its totient is φ = 36776361600.

The previous prime is 77090979209. The next prime is 77090979263. The reversal of 77090979242 is 24297909077.

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, 1905767 + ... + 1945797.

It is an arithmetic number, because the mean of its divisors is an integer number (3783024000).

Almost surely, 2^77090979242 is an apocalyptic number.

77090979242 is a deficient number, since it is larger than the sum of its proper divisors (43965788758).

77090979242 is a wasteful number, since it uses less digits than its factorization.

77090979242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40502.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 77090979242 in words is "seventy-seven billion, ninety million, nine hundred seventy-nine thousand, two hundred forty-two".