16161623854 has 16 divisors (see below), whose sum is σ = 25301625120. Its totient is φ = 7727892480.

The previous prime is 16161623851. The next prime is 16161623857. The reversal of 16161623854 is 45832616161.

It is an interprime number because it is at equal distance from previous prime (16161623851) and next prime (16161623857).

It is a super-2 number, since 2×16161623854² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16161623854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161623851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209662 + ... + 276190.

It is an arithmetic number, because the mean of its divisors is an integer number (1581351570).

Almost surely, 2^16161623854 is an apocalyptic number.

16161623854 is a deficient number, since it is larger than the sum of its proper divisors (9140001266).

16161623854 is a wasteful number, since it uses less digits than its factorization.

16161623854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71835.

The product of its digits is 207360, while the sum is 43.

The spelling of 16161623854 in words is "sixteen billion, one hundred sixty-one million, six hundred twenty-three thousand, eight hundred fifty-four".