2151432565 has 16 divisors (see below), whose sum is σ = 2646657216. Its totient is φ = 1677916800.

The previous prime is 2151432559. The next prime is 2151432589. The reversal of 2151432565 is 5652341512.

It is not a de Polignac number, because 2151432565 - 2⁵ = 2151432533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151432565.

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, 350170 + ... + 356260.

It is an arithmetic number, because the mean of its divisors is an integer number (165416076).

Almost surely, 2^2151432565 is an apocalyptic number.

It is an amenable number.

2151432565 is a deficient number, since it is larger than the sum of its proper divisors (495224651).

2151432565 is a wasteful number, since it uses less digits than its factorization.

2151432565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860.

The product of its digits is 36000, while the sum is 34.

The square root of 2151432565 is about 46383.5376507657. The cubic root of 2151432565 is about 1290.9494772573.

The spelling of 2151432565 in words is "two billion, one hundred fifty-one million, four hundred thirty-two thousand, five hundred sixty-five".