16164434451 has 16 divisors (see below), whose sum is σ = 23776087680. Its totient is φ = 9686550720.

The previous prime is 16164434449. The next prime is 16164434453. The reversal of 16164434451 is 15443446161.

It is an interprime number because it is at equal distance from previous prime (16164434449) and next prime (16164434453).

It is not a de Polignac number, because 16164434451 - 2¹ = 16164434449 is a prime.

It is a super-2 number, since 2×16164434451² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16164434453) 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, 2748925 + ... + 2754798.

It is an arithmetic number, because the mean of its divisors is an integer number (1486005480).

Almost surely, 2^16164434451 is an apocalyptic number.

16164434451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16164434451 is a deficient number, since it is larger than the sum of its proper divisors (7611653229).

16164434451 is a wasteful number, since it uses less digits than its factorization.

16164434451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503826.

The product of its digits is 138240, while the sum is 39.

The spelling of 16164434451 in words is "sixteen billion, one hundred sixty-four million, four hundred thirty-four thousand, four hundred fifty-one".