15552320689920 has 288 divisors, whose sum is σ = 56772092805120. Its totient is φ = 3554432778240.

The previous prime is 15552320689907. The next prime is 15552320689943. The reversal of 15552320689920 is 2998602325551.

It is a super-2 number, since 2×15552320689920² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304497985 + ... + 304549055.

It is an arithmetic number, because the mean of its divisors is an integer number (197125322240).

Almost surely, 2^{15552320689920} is an apocalyptic number.

15552320689920 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 15552320689920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28386046402560).

15552320689920 is an abundant number, since it is smaller than the sum of its proper divisors (41219772115200).

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

15552320689920 is a wasteful number, since it uses less digits than its factorization.

15552320689920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62431 (or 62417 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 57.

The spelling of 15552320689920 in words is "fifteen trillion, five hundred fifty-two billion, three hundred twenty million, six hundred eighty-nine thousand, nine hundred twenty".