15430623220020 has 384 divisors, whose sum is σ = 46812913459200. Its totient is φ = 3788132288512.

The previous prime is 15430623219989. The next prime is 15430623220031. The reversal of 15430623220020 is 2002232603451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 15430623220020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2170572226 + ... + 2170579334.

It is an arithmetic number, because the mean of its divisors is an integer number (121908628800).

Almost surely, 2^{15430623220020} is an apocalyptic number.

15430623220020 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 15430623220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23406456729600).

15430623220020 is an abundant number, since it is smaller than the sum of its proper divisors (31382290239180).

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

15430623220020 is a wasteful number, since it uses less digits than its factorization.

15430623220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7759 (or 7757 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 15430623220020 its reverse (2002232603451), we get a palindrome (17432855823471).

The spelling of 15430623220020 in words is "fifteen trillion, four hundred thirty billion, six hundred twenty-three million, two hundred twenty thousand, twenty".