77045644152542 has 24 divisors (see below), whose sum is σ = 125350408925280. Its totient is φ = 35500360708800.

The previous prime is 77045644152481. The next prime is 77045644152601. The reversal of 77045644152542 is 24525144654077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189435542 + ... + 189841817.

It is an arithmetic number, because the mean of its divisors is an integer number (5222933705220).

Almost surely, 2^{77045644152542} is an apocalyptic number.

77045644152542 is a deficient number, since it is larger than the sum of its proper divisors (48304764772738).

77045644152542 is a wasteful number, since it uses less digits than its factorization.

77045644152542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379277988 (or 379277975 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 56.

The spelling of 77045644152542 in words is "seventy-seven trillion, forty-five billion, six hundred forty-four million, one hundred fifty-two thousand, five hundred forty-two".