15483985920 has 560 divisors, whose sum is σ = 59946052320. Its totient is φ = 3800825856.

The previous prime is 15483985897. The next prime is 15483985949. The reversal of 15483985920 is 2958938451.

15483985920 is a `hidden beast` number, since 1 + 5 + 48 + 3 + 9 + 8 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43130701 + ... + 43131059.

It is an arithmetic number, because the mean of its divisors is an integer number (107046522).

Almost surely, 2^15483985920 is an apocalyptic number.

15483985920 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 15483985920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29973026160).

15483985920 is an abundant number, since it is smaller than the sum of its proper divisors (44462066400).

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

15483985920 is an equidigital number, since it uses as much as digits as its factorization.

15483985920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 15483985920 in words is "fifteen billion, four hundred eighty-three million, nine hundred eighty-five thousand, nine hundred twenty".