15506061000 has 64 divisors (see below), whose sum is σ = 48378919680. Its totient is φ = 4134948800.

The previous prime is 15506060989. The next prime is 15506061001. The reversal of 15506061000 is 16060551.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (15506061001) 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 15 ways as a sum of consecutive naturals, for example, 2581344 + ... + 2587343.

It is an arithmetic number, because the mean of its divisors is an integer number (755920620).

Almost surely, 2^15506061000 is an apocalyptic number.

15506061000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15506061000 is an abundant number, since it is smaller than the sum of its proper divisors (32872858680).

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

15506061000 is a wasteful number, since it uses less digits than its factorization.

15506061000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168711 (or 5168697 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 15506061000 in words is "fifteen billion, five hundred six million, sixty-one thousand".