20152330251 has 8 divisors (see below), whose sum is σ = 26913609360. Its totient is φ = 13412968992.

The previous prime is 20152330207. The next prime is 20152330307. The reversal of 20152330251 is 15203325102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20152330251 - 2⁷ = 20152330123 is a prime.

It is a super-2 number, since 2×20152330251² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152430251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5477316 + ... + 5480993.

It is an arithmetic number, because the mean of its divisors is an integer number (3364201170).

Almost surely, 2^20152330251 is an apocalyptic number.

20152330251 is a deficient number, since it is larger than the sum of its proper divisors (6761279109).

20152330251 is a wasteful number, since it uses less digits than its factorization.

20152330251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10958925.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20152330251 its reverse (15203325102), we get a palindrome (35355655353).

The spelling of 20152330251 in words is "twenty billion, one hundred fifty-two million, three hundred thirty thousand, two hundred fifty-one".