14531995987 has 4 divisors (see below), whose sum is σ = 14707080360. Its totient is φ = 14356911616.

The previous prime is 14531995979. The next prime is 14531996041. The reversal of 14531995987 is 78959913541.

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

It is a cyclic number.

It is not a de Polignac number, because 14531995987 - 2³ = 14531995979 is a prime.

It is a super-2 number, since 2×14531995987² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14531995957) 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, 87542062 + ... + 87542227.

It is an arithmetic number, because the mean of its divisors is an integer number (3676770090).

Almost surely, 2^14531995987 is an apocalyptic number.

14531995987 is a deficient number, since it is larger than the sum of its proper divisors (175084373).

14531995987 is an equidigital number, since it uses as much as digits as its factorization.

14531995987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175084372.

The product of its digits is 12247200, while the sum is 61.

The spelling of 14531995987 in words is "fourteen billion, five hundred thirty-one million, nine hundred ninety-five thousand, nine hundred eighty-seven".