77889596399 has 16 divisors (see below), whose sum is σ = 81320869440. Its totient is φ = 74533374720.

The previous prime is 77889596387. The next prime is 77889596401. The reversal of 77889596399 is 99369598877.

It is a cyclic number.

It is not a de Polignac number, because 77889596399 - 2¹⁶ = 77889530863 is a prime.

It is a super-2 number, since 2×77889596399² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77889596339) 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, 1038197 + ... + 1110689.

It is an arithmetic number, because the mean of its divisors is an integer number (5082554340).

Almost surely, 2^77889596399 is an apocalyptic number.

77889596399 is a deficient number, since it is larger than the sum of its proper divisors (3431273041).

77889596399 is a wasteful number, since it uses less digits than its factorization.

77889596399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73010.

The product of its digits is 1851776640, while the sum is 80.

The spelling of 77889596399 in words is "seventy-seven billion, eight hundred eighty-nine million, five hundred ninety-six thousand, three hundred ninety-nine".