20671254053 has 4 divisors (see below), whose sum is σ = 20699226720. Its totient is φ = 20643281388.

The previous prime is 20671254049. The next prime is 20671254059. The reversal of 20671254053 is 35045217602.

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 a cyclic number.

It is not a de Polignac number, because 20671254053 - 2² = 20671254049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20671254059) 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, 13985225 + ... + 13986702.

It is an arithmetic number, because the mean of its divisors is an integer number (5174806680).

Almost surely, 2^20671254053 is an apocalyptic number.

It is an amenable number.

20671254053 is a deficient number, since it is larger than the sum of its proper divisors (27972667).

20671254053 is an equidigital number, since it uses as much as digits as its factorization.

20671254053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27972666.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 20671254053 in words is "twenty billion, six hundred seventy-one million, two hundred fifty-four thousand, fifty-three".