15221055502340 has 48 divisors (see below), whose sum is σ = 33845578026624. Its totient is φ = 5730091200000.

The previous prime is 15221055502339. The next prime is 15221055502351. The reversal of 15221055502340 is 4320555012251.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15221055502340.

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, 9836465 + ... + 11278215.

It is an arithmetic number, because the mean of its divisors is an integer number (705116208888).

Almost surely, 2^{15221055502340} is an apocalyptic number.

15221055502340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15221055502340 is an abundant number, since it is smaller than the sum of its proper divisors (18624522524284).

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

15221055502340 is a wasteful number, since it uses less digits than its factorization.

15221055502340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472828 (or 1472826 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 15221055502340 in words is "fifteen trillion, two hundred twenty-one billion, fifty-five million, five hundred two thousand, three hundred forty".