15451471455420 has 1152 divisors, whose sum is σ = 59441207132160. Its totient is φ = 2911636316160.

The previous prime is 15451471455419. The next prime is 15451471455437. The reversal of 15451471455420 is 2455417415451.

It is a self number, because there is not a number n which added to its sum of digits gives 15451471455420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 23881717537 + ... + 23881718183.

It is an arithmetic number, because the mean of its divisors is an integer number (51598270080).

Almost surely, 2^{15451471455420} is an apocalyptic number.

15451471455420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15451471455420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29720603566080).

15451471455420 is an abundant number, since it is smaller than the sum of its proper divisors (43989735676740).

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

15451471455420 is a wasteful number, since it uses less digits than its factorization.

15451471455420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 2240000, while the sum is 48.

The spelling of 15451471455420 in words is "fifteen trillion, four hundred fifty-one billion, four hundred seventy-one million, four hundred fifty-five thousand, four hundred twenty".