15432230251 has 4 divisors (see below), whose sum is σ = 15457405792. Its totient is φ = 15407054712.

The previous prime is 15432230189. The next prime is 15432230263. The reversal of 15432230251 is 15203223451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15203223451 = 13 ⋅1169478727.

It is a cyclic number.

It is not a de Polignac number, because 15432230251 - 2⁷ = 15432230123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15432230291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12586851 + ... + 12588076.

It is an arithmetic number, because the mean of its divisors is an integer number (3864351448).

Almost surely, 2^15432230251 is an apocalyptic number.

15432230251 is a deficient number, since it is larger than the sum of its proper divisors (25175541).

15432230251 is an equidigital number, since it uses as much as digits as its factorization.

15432230251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25175540.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 15432230251 in words is "fifteen billion, four hundred thirty-two million, two hundred thirty thousand, two hundred fifty-one".