16552451909 has 12 divisors (see below), whose sum is σ = 19406513664. Its totient is φ = 14076095544.

The previous prime is 16552451849. The next prime is 16552451911. The reversal of 16552451909 is 90915425561.

It is not a de Polignac number, because 16552451909 - 2¹⁶ = 16552386373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16552451309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1323719 + ... + 1336164.

It is an arithmetic number, because the mean of its divisors is an integer number (1617209472).

Almost surely, 2^16552451909 is an apocalyptic number.

It is an amenable number.

16552451909 is a deficient number, since it is larger than the sum of its proper divisors (2854061755).

16552451909 is a wasteful number, since it uses less digits than its factorization.

16552451909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660024 (or 2660017 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 16552451909 in words is "sixteen billion, five hundred fifty-two million, four hundred fifty-one thousand, nine hundred nine".