15641609232 has 40 divisors (see below), whose sum is σ = 40550308384. Its totient is φ = 5195441664.

The previous prime is 15641609219. The next prime is 15641609233. The reversal of 15641609232 is 23290614651.

It is not an unprimeable number, because it can be changed into a prime (15641609233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562153 + ... + 589320.

Almost surely, 2^15641609232 is an apocalyptic number.

15641609232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15641609232 is an abundant number, since it is smaller than the sum of its proper divisors (24908699152).

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

15641609232 is a wasteful number, since it uses less digits than its factorization.

15641609232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151767 (or 1151761 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 15641609232 in words is "fifteen billion, six hundred forty-one million, six hundred nine thousand, two hundred thirty-two".