15420123632650 has 48 divisors (see below), whose sum is σ = 32935613369760. Its totient is φ = 5312195697600.

The previous prime is 15420123632621. The next prime is 15420123632657. The reversal of 15420123632650 is 5623632102451.

It is a super-2 number, since 2×15420123632650² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15420123632657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 737794509 + ... + 737815408.

It is an arithmetic number, because the mean of its divisors is an integer number (686158611870).

Almost surely, 2^{15420123632650} is an apocalyptic number.

15420123632650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15420123632650 is an abundant number, since it is smaller than the sum of its proper divisors (17515489737110).

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

15420123632650 is a wasteful number, since it uses less digits than its factorization.

15420123632650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475609959 (or 1475609954 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 15420123632650 in words is "fifteen trillion, four hundred twenty billion, one hundred twenty-three million, six hundred thirty-two thousand, six hundred fifty".