55646512650 has 48 divisors (see below), whose sum is σ = 153337060800. Its totient is φ = 14839069680.

The previous prime is 55646512589. The next prime is 55646512657. The reversal of 55646512650 is 5621564655.

55646512650 is a `hidden beast` number, since 5 + 564 + 65 + 1 + 26 + 5 + 0 = 666.

It is a super-2 number, since 2×55646512650² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 55646512596 and 55646512605.

It is not an unprimeable number, because it can be changed into a prime (55646512657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20608470 + ... + 20611169.

It is an arithmetic number, because the mean of its divisors is an integer number (3194522100).

Almost surely, 2^55646512650 is an apocalyptic number.

55646512650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55646512650 is an abundant number, since it is smaller than the sum of its proper divisors (97690548150).

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

55646512650 is a wasteful number, since it uses less digits than its factorization.

55646512650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41219660 (or 41219649 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 55646512650 in words is "fifty-five billion, six hundred forty-six million, five hundred twelve thousand, six hundred fifty".