77967149553 has 24 divisors (see below), whose sum is σ = 119256446400. Its totient is φ = 48947527584.

The previous prime is 77967149539. The next prime is 77967149597. The reversal of 77967149553 is 35594176977.

77967149553 is a `hidden beast` number, since 7 + 7 + 9 + 6 + 71 + 4 + 9 + 553 = 666.

It is not a de Polignac number, because 77967149553 - 2⁸ = 77967149297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77967149053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1336558 + ... + 1393671.

It is an arithmetic number, because the mean of its divisors is an integer number (4969018600).

Almost surely, 2^77967149553 is an apocalyptic number.

It is an amenable number.

77967149553 is a deficient number, since it is larger than the sum of its proper divisors (41289296847).

77967149553 is a wasteful number, since it uses less digits than its factorization.

77967149553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730421 (or 2730418 counting only the distinct ones).

The product of its digits is 50009400, while the sum is 63.

The spelling of 77967149553 in words is "seventy-seven billion, nine hundred sixty-seven million, one hundred forty-nine thousand, five hundred fifty-three".