20178879053 has 4 divisors (see below), whose sum is σ = 20214219168. Its totient is φ = 20143538940.

The previous prime is 20178879013. The next prime is 20178879101. The reversal of 20178879053 is 35097887102.

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 20178879053 - 2²² = 20174684749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20178878992 and 20178879010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20178879013) 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, 17669201 + ... + 17670342.

It is an arithmetic number, because the mean of its divisors is an integer number (5053554792).

Almost surely, 2^20178879053 is an apocalyptic number.

It is an amenable number.

20178879053 is a deficient number, since it is larger than the sum of its proper divisors (35340115).

20178879053 is an equidigital number, since it uses as much as digits as its factorization.

20178879053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35340114.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 20178879053 in words is "twenty billion, one hundred seventy-eight million, eight hundred seventy-nine thousand, fifty-three".