16697572617 has 16 divisors (see below), whose sum is σ = 24290043840. Its totient is φ = 10118630400.

The previous prime is 16697572603. The next prime is 16697572621. The reversal of 16697572617 is 71627579661.

It is a happy number.

It is not a de Polignac number, because 16697572617 - 2¹⁶ = 16697507081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16697572657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357117 + ... + 401157.

It is an arithmetic number, because the mean of its divisors is an integer number (1518127740).

Almost surely, 2^16697572617 is an apocalyptic number.

It is an amenable number.

16697572617 is a deficient number, since it is larger than the sum of its proper divisors (7592471223).

16697572617 is a wasteful number, since it uses less digits than its factorization.

16697572617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55544.

The product of its digits is 6667920, while the sum is 57.

The spelling of 16697572617 in words is "sixteen billion, six hundred ninety-seven million, five hundred seventy-two thousand, six hundred seventeen".