77542026507 has 48 divisors (see below), whose sum is σ = 126801024480. Its totient is φ = 45230976000.

The previous prime is 77542026503. The next prime is 77542026619. The reversal of 77542026507 is 70562024577.

77542026507 is a `hidden beast` number, since 77 + 54 + 2 + 0 + 26 + 507 = 666.

It is not a de Polignac number, because 77542026507 - 2² = 77542026503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77542026503) 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 47 ways as a sum of consecutive naturals, for example, 867507 + ... + 952707.

It is an arithmetic number, because the mean of its divisors is an integer number (2641688010).

Almost surely, 2^77542026507 is an apocalyptic number.

77542026507 is a deficient number, since it is larger than the sum of its proper divisors (49258997973).

77542026507 is a wasteful number, since it uses less digits than its factorization.

77542026507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85564 (or 85561 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 77542026507 in words is "seventy-seven billion, five hundred forty-two million, twenty-six thousand, five hundred seven".