77195465945 has 12 divisors (see below), whose sum is σ = 100308429036. Its totient is φ = 57005881920.

The previous prime is 77195465861. The next prime is 77195465953. The reversal of 77195465945 is 54956459177.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1268214544 + 75927251401 = 35612^2 + 275549^2 .

It is not a de Polignac number, because 77195465945 - 2⁸ = 77195465689 is a prime.

It is a Duffinian 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, 45676946 + ... + 45678635.

It is an arithmetic number, because the mean of its divisors is an integer number (8359035753).

Almost surely, 2^77195465945 is an apocalyptic number.

It is an amenable number.

77195465945 is a deficient number, since it is larger than the sum of its proper divisors (23112963091).

77195465945 is a wasteful number, since it uses less digits than its factorization.

77195465945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91355612 (or 91355599 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 62.

The spelling of 77195465945 in words is "seventy-seven billion, one hundred ninety-five million, four hundred sixty-five thousand, nine hundred forty-five".