15551505055660 has 48 divisors (see below), whose sum is σ = 37343476316160. Its totient is φ = 5329106850240.

The previous prime is 15551505055649. The next prime is 15551505055699. The reversal of 15551505055660 is 6655050515551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29295796 + ... + 29821915.

It is an arithmetic number, because the mean of its divisors is an integer number (777989089920).

Almost surely, 2^{15551505055660} is an apocalyptic number.

15551505055660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15551505055660 is an abundant number, since it is smaller than the sum of its proper divisors (21791971260500).

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

15551505055660 is a wasteful number, since it uses less digits than its factorization.

15551505055660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59119606 (or 59119604 counting only the distinct ones).

The product of its (nonzero) digits is 2812500, while the sum is 49.

The spelling of 15551505055660 in words is "fifteen trillion, five hundred fifty-one billion, five hundred five million, fifty-five thousand, six hundred sixty".