15955089920 has 480 divisors, whose sum is σ = 50246355456. Its totient is φ = 4799692800.

The previous prime is 15955089907. The next prime is 15955089923. The reversal of 15955089920 is 2998055951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15955089923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42774854 + ... + 42775226.

Almost surely, 2^15955089920 is an apocalyptic number.

15955089920 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 15955089920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25123177728).

15955089920 is an abundant number, since it is smaller than the sum of its proper divisors (34291265536).

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

15955089920 is a wasteful number, since it uses less digits than its factorization.

15955089920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 53.

The spelling of 15955089920 in words is "fifteen billion, nine hundred fifty-five million, eighty-nine thousand, nine hundred twenty".