20757150653 has 4 divisors (see below), whose sum is σ = 21659635488. Its totient is φ = 19854665820.

The previous prime is 20757150629. The next prime is 20757150679. The reversal of 20757150653 is 35605175702.

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 20757150653 - 2¹⁶ = 20757085117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20757150653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20757150613) 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, 451242383 + ... + 451242428.

It is an arithmetic number, because the mean of its divisors is an integer number (5414908872).

Almost surely, 2^20757150653 is an apocalyptic number.

20757150653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20757150653 is a deficient number, since it is larger than the sum of its proper divisors (902484835).

20757150653 is an equidigital number, since it uses as much as digits as its factorization.

20757150653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902484834.

The product of its (nonzero) digits is 220500, while the sum is 41.

The spelling of 20757150653 in words is "twenty billion, seven hundred fifty-seven million, one hundred fifty thousand, six hundred fifty-three".