77777074004 has 24 divisors (see below), whose sum is σ = 155561692608. Its totient is φ = 33331415040.

The previous prime is 77777074003. The next prime is 77777074021. The reversal of 77777074004 is 40047077777.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77777074003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 656852 + ... + 766164.

It is an arithmetic number, because the mean of its divisors is an integer number (6481737192).

Almost surely, 2^77777074004 is an apocalyptic number.

It is an amenable number.

77777074004 is an abundant number, since it is smaller than the sum of its proper divisors (77784618604).

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

77777074004 is a wasteful number, since it uses less digits than its factorization.

77777074004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134735 (or 134733 counting only the distinct ones).

The product of its (nonzero) digits is 1882384, while the sum is 50.

The spelling of 77777074004 in words is "seventy-seven billion, seven hundred seventy-seven million, seventy-four thousand, four".