77020415232771 has 16 divisors (see below), whose sum is σ = 102840317435520. Its totient is φ = 51273768799680.

The previous prime is 77020415232751. The next prime is 77020415232781. The reversal of 77020415232771 is 17723251402077.

It is not a de Polignac number, because 77020415232771 - 2⁷ = 77020415232643 is a prime.

It is a super-2 number, since 2×77020415232771² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77020415232771.

It is not an unprimeable number, because it can be changed into a prime (77020415232751) 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, 2536336 + ... + 12667826.

It is an arithmetic number, because the mean of its divisors is an integer number (6427519839720).

Almost surely, 2^{77020415232771} is an apocalyptic number.

77020415232771 is a deficient number, since it is larger than the sum of its proper divisors (25819902202749).

77020415232771 is a wasteful number, since it uses less digits than its factorization.

77020415232771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135106.

The product of its (nonzero) digits is 1152480, while the sum is 48.

The spelling of 77020415232771 in words is "seventy-seven trillion, twenty billion, four hundred fifteen million, two hundred thirty-two thousand, seven hundred seventy-one".