77777012054 has 32 divisors (see below), whose sum is σ = 138507812352. Its totient is φ = 32061960000.

The previous prime is 77777012039. The next prime is 77777012111. The reversal of 77777012054 is 45021077777.

It is a happy number.

It is a super-2 number, since 2×77777012054² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913472 + ... + 994979.

It is an arithmetic number, because the mean of its divisors is an integer number (4328369136).

Almost surely, 2^77777012054 is an apocalyptic number.

77777012054 is a deficient number, since it is larger than the sum of its proper divisors (60730800298).

77777012054 is a wasteful number, since it uses less digits than its factorization.

77777012054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908572.

The product of its (nonzero) digits is 672280, while the sum is 47.

The spelling of 77777012054 in words is "seventy-seven billion, seven hundred seventy-seven million, twelve thousand, fifty-four".