16656511942 has 16 divisors (see below), whose sum is σ = 28556870400. Its totient is φ = 7137792648.

The previous prime is 16656511939. The next prime is 16656511943. The reversal of 16656511942 is 24911565661.

It is a happy number.

It is a super-2 number, since 2×16656511942² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16656511892 and 16656511901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656511943) 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, 100809 + ... + 208507.

It is an arithmetic number, because the mean of its divisors is an integer number (1784804400).

Almost surely, 2^16656511942 is an apocalyptic number.

16656511942 is a deficient number, since it is larger than the sum of its proper divisors (11900358458).

16656511942 is a wasteful number, since it uses less digits than its factorization.

16656511942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118755.

The product of its digits is 388800, while the sum is 46.

The spelling of 16656511942 in words is "sixteen billion, six hundred fifty-six million, five hundred eleven thousand, nine hundred forty-two".