77475730156 has 48 divisors (see below), whose sum is σ = 151741312128. Its totient is φ = 34315228800.

The previous prime is 77475730151. The next prime is 77475730169. The reversal of 77475730156 is 65103757477.

It is not an unprimeable number, because it can be changed into a prime (77475730151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121291 + ... + 411901.

It is an arithmetic number, because the mean of its divisors is an integer number (3161277336).

Almost surely, 2^77475730156 is an apocalyptic number.

It is an amenable number.

77475730156 is a deficient number, since it is larger than the sum of its proper divisors (74265581972).

77475730156 is a wasteful number, since it uses less digits than its factorization.

77475730156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290782 (or 290780 counting only the distinct ones).

The product of its (nonzero) digits is 4321800, while the sum is 52.

The spelling of 77475730156 in words is "seventy-seven billion, four hundred seventy-five million, seven hundred thirty thousand, one hundred fifty-six".