77147510136 has 16 divisors (see below), whose sum is σ = 192868775400. Its totient is φ = 25715836704.

The previous prime is 77147510123. The next prime is 77147510137. The reversal of 77147510136 is 63101574177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77147510137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1607239771 + ... + 1607239818.

Almost surely, 2^77147510136 is an apocalyptic number.

It is an amenable number.

77147510136 is an abundant number, since it is smaller than the sum of its proper divisors (115721265264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77147510136 is a wasteful number, since it uses less digits than its factorization.

77147510136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214479598 (or 3214479594 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 77147510136 in words is "seventy-seven billion, one hundred forty-seven million, five hundred ten thousand, one hundred thirty-six".