77554474379 has 24 divisors (see below), whose sum is σ = 82634584032. Its totient is φ = 72772784640.

The previous prime is 77554474373. The next prime is 77554474381. The reversal of 77554474379 is 97347445577.

It is not a de Polignac number, because 77554474379 - 2⁴ = 77554474363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77554474373) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 17182427 + ... + 17186939.

It is an arithmetic number, because the mean of its divisors is an integer number (3443107668).

Almost surely, 2^77554474379 is an apocalyptic number.

77554474379 is a deficient number, since it is larger than the sum of its proper divisors (5080109653).

77554474379 is a wasteful number, since it uses less digits than its factorization.

77554474379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995 (or 4976 counting only the distinct ones).

The product of its digits is 103723200, while the sum is 62.

The spelling of 77554474379 in words is "seventy-seven billion, five hundred fifty-four million, four hundred seventy-four thousand, three hundred seventy-nine".