15545091960 has 192 divisors, whose sum is σ = 51321816000. Its totient is φ = 4080181248.

The previous prime is 15545091911. The next prime is 15545091983. The reversal of 15545091960 is 6919054551.

It is a happy number.

15545091960 is a `hidden beast` number, since 1 + 5 + 5 + 450 + 9 + 196 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6947962 + ... + 6950198.

It is an arithmetic number, because the mean of its divisors is an integer number (267301125).

Almost surely, 2^15545091960 is an apocalyptic number.

15545091960 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 15545091960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25660908000).

15545091960 is an abundant number, since it is smaller than the sum of its proper divisors (35776724040).

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

15545091960 is a wasteful number, since it uses less digits than its factorization.

15545091960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550 (or 2543 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 15545091960 in words is "fifteen billion, five hundred forty-five million, ninety-one thousand, nine hundred sixty".