14987920831 has 4 divisors (see below), whose sum is σ = 16140837832. Its totient is φ = 13835003832.

The previous prime is 14987920819. The next prime is 14987920847. The reversal of 14987920831 is 13802978941.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 14987920831 - 2²³ = 14979532223 is a prime.

It is a super-2 number, since 2×14987920831² (a number of 21 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 (14987920811) 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, 576458481 + ... + 576458506.

It is an arithmetic number, because the mean of its divisors is an integer number (4035209458).

Almost surely, 2^14987920831 is an apocalyptic number.

14987920831 is a deficient number, since it is larger than the sum of its proper divisors (1152917001).

14987920831 is a wasteful number, since it uses less digits than its factorization.

14987920831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152917000.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 14987920831 in words is "fourteen billion, nine hundred eighty-seven million, nine hundred twenty thousand, eight hundred thirty-one".