16906390064 has 20 divisors (see below), whose sum is σ = 33056649120. Its totient is φ = 8375641920.

The previous prime is 16906390063. The next prime is 16906390091. The reversal of 16906390064 is 46009360961.

It is a super-2 number, since 2×16906390064² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16906389997 and 16906390024.

It is not an unprimeable number, because it can be changed into a prime (16906390063) 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, 4845272 + ... + 4848759.

It is an arithmetic number, because the mean of its divisors is an integer number (1652832456).

Almost surely, 2^16906390064 is an apocalyptic number.

It is an amenable number.

16906390064 is a deficient number, since it is larger than the sum of its proper divisors (16150259056).

16906390064 is a wasteful number, since it uses less digits than its factorization.

16906390064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9694148 (or 9694142 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 16906390064 in words is "sixteen billion, nine hundred six million, three hundred ninety thousand, sixty-four".