16551772153 has 4 divisors (see below), whose sum is σ = 18916311040. Its totient is φ = 14187233268.

The previous prime is 16551772117. The next prime is 16551772183. The reversal of 16551772153 is 35127715561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16551772153 - 2¹³ = 16551763961 is a prime.

It is a super-2 number, since 2×16551772153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16551772183) 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, 1182269433 + ... + 1182269446.

It is an arithmetic number, because the mean of its divisors is an integer number (4729077760).

Almost surely, 2^16551772153 is an apocalyptic number.

It is an amenable number.

16551772153 is a deficient number, since it is larger than the sum of its proper divisors (2364538887).

16551772153 is an equidigital number, since it uses as much as digits as its factorization.

16551772153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364538886.

The product of its digits is 220500, while the sum is 43.

The spelling of 16551772153 in words is "sixteen billion, five hundred fifty-one million, seven hundred seventy-two thousand, one hundred fifty-three".