15940582290 has 48 divisors (see below), whose sum is σ = 42456389976. Its totient is φ = 4147142400.

The previous prime is 15940582289. The next prime is 15940582303. The reversal of 15940582290 is 9228504951.

It is a happy number.

15940582290 is a `hidden beast` number, since 1 + 5 + 9 + 40 + 582 + 29 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10704178521 + 5236403769 = 103461^2 + 72363^2 .

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2156281 + ... + 2163660.

Almost surely, 2^15940582290 is an apocalyptic number.

15940582290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15940582290 is an abundant number, since it is smaller than the sum of its proper divisors (26515807686).

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

15940582290 is a wasteful number, since it uses less digits than its factorization.

15940582290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319995 (or 4319992 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 15940582290 in words is "fifteen billion, nine hundred forty million, five hundred eighty-two thousand, two hundred ninety".