77120142004 has 12 divisors (see below), whose sum is σ = 135659525764. Its totient is φ = 38360277504.

The previous prime is 77120141981. The next prime is 77120142023. The reversal of 77120142004 is 40024102177.

It can be written as a sum of positive squares in 2 ways, for example, as 49729892004 + 27390250000 = 223002^2 + 165500^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49947507 + ... + 49949050.

Almost surely, 2^77120142004 is an apocalyptic number.

It is an amenable number.

77120142004 is a deficient number, since it is larger than the sum of its proper divisors (58539383760).

77120142004 is a wasteful number, since it uses less digits than its factorization.

77120142004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99896754 (or 99896752 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The spelling of 77120142004 in words is "seventy-seven billion, one hundred twenty million, one hundred forty-two thousand, four".