16077432591 has 24 divisors (see below), whose sum is σ = 25348317696. Its totient is φ = 9738444240.

The previous prime is 16077432587. The next prime is 16077432599. The reversal of 16077432591 is 19523477061.

16077432591 is a `hidden beast` number, since 1 + 60 + 77 + 432 + 5 + 91 = 666.

It is not a de Polignac number, because 16077432591 - 2² = 16077432587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16077432599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135936 + ... + 225018.

It is an arithmetic number, because the mean of its divisors is an integer number (1056179904).

Almost surely, 2^16077432591 is an apocalyptic number.

16077432591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16077432591 is a deficient number, since it is larger than the sum of its proper divisors (9270885105).

16077432591 is a wasteful number, since it uses less digits than its factorization.

16077432591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90923 (or 90920 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 16077432591 in words is "sixteen billion, seventy-seven million, four hundred thirty-two thousand, five hundred ninety-one".