15420073356 has 192 divisors, whose sum is σ = 42571146240. Its totient is φ = 4877091648.

The previous prime is 15420073337. The next prime is 15420073369. The reversal of 15420073356 is 65337002451.

It is a super-2 number, since 2×15420073356² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 15420073356.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34808071 + ... + 34808513.

It is an arithmetic number, because the mean of its divisors is an integer number (221724720).

Almost surely, 2^15420073356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15420073356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21285573120).

15420073356 is an abundant number, since it is smaller than the sum of its proper divisors (27151072884).

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

15420073356 is a wasteful number, since it uses less digits than its factorization.

15420073356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 15420073356 in words is "fifteen billion, four hundred twenty million, seventy-three thousand, three hundred fifty-six".