77761362035128 has 16 divisors (see below), whose sum is σ = 152141795286480. Its totient is φ = 37190216625408.

The previous prime is 77761362035113. The next prime is 77761362035153. The reversal of 77761362035128 is 82153026316777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211308048825 + ... + 211308049192.

It is an arithmetic number, because the mean of its divisors is an integer number (9508862205405).

Almost surely, 2^{77761362035128} is an apocalyptic number.

It is an amenable number.

77761362035128 is a deficient number, since it is larger than the sum of its proper divisors (74380433251352).

77761362035128 is a wasteful number, since it uses less digits than its factorization.

77761362035128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422616098046 (or 422616098042 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 77761362035128 in words is "seventy-seven trillion, seven hundred sixty-one billion, three hundred sixty-two million, thirty-five thousand, one hundred twenty-eight".