77541364644742 has 16 divisors (see below), whose sum is σ = 120367490748912. Its totient is φ = 37434865534560.

The previous prime is 77541364644649. The next prime is 77541364644781. The reversal of 77541364644742 is 24744646314577.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3999441753 + ... + 3999461140.

It is an arithmetic number, because the mean of its divisors is an integer number (7522968171807).

Almost surely, 2^{77541364644742} is an apocalyptic number.

77541364644742 is a deficient number, since it is larger than the sum of its proper divisors (42826126104170).

77541364644742 is a wasteful number, since it uses less digits than its factorization.

77541364644742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7998903063.

The product of its digits is 379330560, while the sum is 64.

The spelling of 77541364644742 in words is "seventy-seven trillion, five hundred forty-one billion, three hundred sixty-four million, six hundred forty-four thousand, seven hundred forty-two".