15655506051664 has 10 divisors (see below), whose sum is σ = 30332542975130. Its totient is φ = 7827753025824.

The previous prime is 15655506051631. The next prime is 15655506051667. The reversal of 15655506051664 is 46615060555651.

It can be written as a sum of positive squares in only one way, i.e., 15056417667600 + 599088384064 = 3880260^2 + 774008^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15655506051667) 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 as a sum of consecutive naturals, namely, 489234564099 + ... + 489234564130.

It is an arithmetic number, because the mean of its divisors is an integer number (3033254297513).

Almost surely, 2^{15655506051664} is an apocalyptic number.

It is an amenable number.

15655506051664 is a deficient number, since it is larger than the sum of its proper divisors (14677036923466).

15655506051664 is an equidigital number, since it uses as much as digits as its factorization.

15655506051664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978469128237 (or 978469128231 counting only the distinct ones).

The product of its (nonzero) digits is 16200000, while the sum is 55.

The spelling of 15655506051664 in words is "fifteen trillion, six hundred fifty-five billion, five hundred six million, fifty-one thousand, six hundred sixty-four".