20123513053 has 4 divisors (see below), whose sum is σ = 22998300640. Its totient is φ = 17248725468.

The previous prime is 20123513029. The next prime is 20123513057. The reversal of 20123513053 is 35031532102.

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 20123513053 - 2⁵ = 20123513021 is a prime.

It is a super-2 number, since 2×20123513053² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123513057) 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, 1437393783 + ... + 1437393796.

It is an arithmetic number, because the mean of its divisors is an integer number (5749575160).

Almost surely, 2^20123513053 is an apocalyptic number.

It is an amenable number.

20123513053 is a deficient number, since it is larger than the sum of its proper divisors (2874787587).

20123513053 is an equidigital number, since it uses as much as digits as its factorization.

20123513053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874787586.

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 20123513053 in words is "twenty billion, one hundred twenty-three million, five hundred thirteen thousand, fifty-three".