55651001670 has 64 divisors (see below), whose sum is σ = 161893831680. Its totient is φ = 13491151200.

The previous prime is 55651001573. The next prime is 55651001671. The reversal of 55651001670 is 7610015655.

55651001670 is a `hidden beast` number, since 5 + 565 + 10 + 0 + 16 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55651001671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9365886 + ... + 9371825.

It is an arithmetic number, because the mean of its divisors is an integer number (2529591120).

Almost surely, 2^55651001670 is an apocalyptic number.

55651001670 is an abundant number, since it is smaller than the sum of its proper divisors (106242830010).

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

55651001670 is a wasteful number, since it uses less digits than its factorization.

55651001670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18737738 (or 18737732 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The spelling of 55651001670 in words is "fifty-five billion, six hundred fifty-one million, one thousand, six hundred seventy".