15081801880 has 32 divisors (see below), whose sum is σ = 33938115840. Its totient is φ = 6031998720.

The previous prime is 15081801869. The next prime is 15081801881. The reversal of 15081801880 is 8810818051.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15081801881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425812 + ... + 459868.

It is an arithmetic number, because the mean of its divisors is an integer number (1060566120).

Almost surely, 2^15081801880 is an apocalyptic number.

15081801880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15081801880 is an abundant number, since it is smaller than the sum of its proper divisors (18856313960).

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

15081801880 is a wasteful number, since it uses less digits than its factorization.

15081801880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45139 (or 45135 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 40.

The spelling of 15081801880 in words is "fifteen billion, eighty-one million, eight hundred one thousand, eight hundred eighty".