16540714931 has 4 divisors (see below), whose sum is σ = 17813077632. Its totient is φ = 15268352232.

The previous prime is 16540714907. The next prime is 16540714943. The reversal of 16540714931 is 13941704561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13941704561 = 97 ⋅143728913.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16540714931 is a prime.

It is a super-2 number, since 2×16540714931² (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 (16540714901) 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, 636181331 + ... + 636181356.

It is an arithmetic number, because the mean of its divisors is an integer number (4453269408).

Almost surely, 2^16540714931 is an apocalyptic number.

16540714931 is a deficient number, since it is larger than the sum of its proper divisors (1272362701).

16540714931 is a wasteful number, since it uses less digits than its factorization.

16540714931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272362700.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 16540714931 in words is "sixteen billion, five hundred forty million, seven hundred fourteen thousand, nine hundred thirty-one".