16662426634 has 16 divisors (see below), whose sum is σ = 28571704128. Its totient is φ = 7139153952.

The previous prime is 16662426593. The next prime is 16662426667. The reversal of 16662426634 is 43662426661.

It is a happy number.

It is a super-2 number, since 2×16662426634² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101592 + ... + 208915.

It is an arithmetic number, because the mean of its divisors is an integer number (1785731508).

Almost surely, 2^16662426634 is an apocalyptic number.

16662426634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16662426634 is a deficient number, since it is larger than the sum of its proper divisors (11909277494).

16662426634 is a wasteful number, since it uses less digits than its factorization.

16662426634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314349.

The product of its digits is 1492992, while the sum is 46.

The spelling of 16662426634 in words is "sixteen billion, six hundred sixty-two million, four hundred twenty-six thousand, six hundred thirty-four".