77550552361431 has 16 divisors (see below), whose sum is σ = 114891915859200. Its totient is φ = 51699374345304.

The previous prime is 77550552361417. The next prime is 77550552361439. The reversal of 77550552361431 is 13416325505577.

77550552361431 is a `hidden beast` number, since 7 + 7 + 5 + 50 + 5 + 523 + 61 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 77550552361431 - 2¹⁴ = 77550552345047 is a prime.

It is a super-2 number, since 2×77550552361431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77550552361439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26176371 + ... + 28987988.

It is an arithmetic number, because the mean of its divisors is an integer number (7180744741200).

Almost surely, 2^{77550552361431} is an apocalyptic number.

77550552361431 is a deficient number, since it is larger than the sum of its proper divisors (37341363497769).

77550552361431 is a wasteful number, since it uses less digits than its factorization.

77550552361431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55216435 (or 55216429 counting only the distinct ones).

The product of its (nonzero) digits is 13230000, while the sum is 54.

The spelling of 77550552361431 in words is "seventy-seven trillion, five hundred fifty billion, five hundred fifty-two million, three hundred sixty-one thousand, four hundred thirty-one".