20251416662553 has 4 divisors (see below), whose sum is σ = 27001888883408. Its totient is φ = 13500944441700.

The previous prime is 20251416662489. The next prime is 20251416662629. The reversal of 20251416662553 is 35526661415202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20251416662553 - 2⁶ = 20251416662489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20251416664553) 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, 3375236110423 + ... + 3375236110428.

It is an arithmetic number, because the mean of its divisors is an integer number (6750472220852).

Almost surely, 2^{20251416662553} is an apocalyptic number.

It is an amenable number.

20251416662553 is a deficient number, since it is larger than the sum of its proper divisors (6750472220855).

20251416662553 is an equidigital number, since it uses as much as digits as its factorization.

20251416662553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750472220854.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 20251416662553 in words is "twenty trillion, two hundred fifty-one billion, four hundred sixteen million, six hundred sixty-two thousand, five hundred fifty-three".