16555507146 has 24 divisors (see below), whose sum is σ = 35912154564. Its totient is φ = 5512057920.

The previous prime is 16555507141. The next prime is 16555507159. The reversal of 16555507146 is 64170555561.

It is a happy number.

16555507146 is a `hidden beast` number, since 1 + 6 + 55 + 550 + 7 + 1 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12164987025 + 4390520121 = 110295^2 + 66261^2 .

It is a super-2 number, since 2×16555507146² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16555507141) 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, 521185 + ... + 552036.

Almost surely, 2^16555507146 is an apocalyptic number.

16555507146 is an abundant number, since it is smaller than the sum of its proper divisors (19356647418).

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

16555507146 is a wasteful number, since it uses less digits than its factorization.

16555507146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074086 (or 1074083 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The spelling of 16555507146 in words is "sixteen billion, five hundred fifty-five million, five hundred seven thousand, one hundred forty-six".