16551772152 has 96 divisors (see below), whose sum is σ = 44452249200. Its totient is φ = 5134176256.

The previous prime is 16551772117. The next prime is 16551772183. The reversal of 16551772152 is 25127715561.

It is a super-2 number, since 2×16551772152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603898 + ... + 630710.

Almost surely, 2^16551772152 is an apocalyptic number.

16551772152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16551772152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22226124600).

16551772152 is an abundant number, since it is smaller than the sum of its proper divisors (27900477048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16551772152 is a wasteful number, since it uses less digits than its factorization.

16551772152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26945 (or 26924 counting only the distinct ones).

The product of its digits is 147000, while the sum is 42.

The spelling of 16551772152 in words is "sixteen billion, five hundred fifty-one million, seven hundred seventy-two thousand, one hundred fifty-two".