2163561432 has 64 divisors (see below), whose sum is σ = 5452320000. Its totient is φ = 715423104.

The previous prime is 2163561427. The next prime is 2163561461. The reversal of 2163561432 is 2341653612.

It is a junction number, because it is equal to n+sod(n) for n = 2163561393 and 2163561402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2927319 + ... + 2928057.

It is an arithmetic number, because the mean of its divisors is an integer number (85192500).

Almost surely, 2^2163561432 is an apocalyptic number.

It is an amenable number.

2163561432 is an abundant number, since it is smaller than the sum of its proper divisors (3288758568).

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

2163561432 is a wasteful number, since it uses less digits than its factorization.

2163561432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1556 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 2163561432 is about 46514.0992818307. The cubic root of 2163561432 is about 1293.3708750808.

The spelling of 2163561432 in words is "two billion, one hundred sixty-three million, five hundred sixty-one thousand, four hundred thirty-two".