16706681465 has 16 divisors (see below), whose sum is σ = 21314389248. Its totient is φ = 12543026496.

The previous prime is 16706681317. The next prime is 16706681491. The reversal of 16706681465 is 56418660761.

It is a cyclic number.

It is not a de Polignac number, because 16706681465 - 2¹⁸ = 16706419321 is a prime.

It is a super-2 number, since 2×16706681465² (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 15 ways as a sum of consecutive naturals, for example, 1364429 + ... + 1376618.

It is an arithmetic number, because the mean of its divisors is an integer number (1332149328).

Almost surely, 2^16706681465 is an apocalyptic number.

It is an amenable number.

16706681465 is a deficient number, since it is larger than the sum of its proper divisors (4607707783).

16706681465 is a wasteful number, since it uses less digits than its factorization.

16706681465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741128.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 16706681465 in words is "sixteen billion, seven hundred six million, six hundred eighty-one thousand, four hundred sixty-five".