20257460701 has 4 divisors (see below), whose sum is σ = 20278718172. Its totient is φ = 20236203232.

The previous prime is 20257460693. The next prime is 20257460723. The reversal of 20257460701 is 10706475202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9446868025 + 10810592676 = 97195^2 + 103974^2 .

It is a cyclic number.

It is not a de Polignac number, because 20257460701 - 2³ = 20257460693 is a prime.

It is a super-2 number, since 2×20257460701² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257460731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10627306 + ... + 10629211.

It is an arithmetic number, because the mean of its divisors is an integer number (5069679543).

Almost surely, 2^20257460701 is an apocalyptic number.

It is an amenable number.

20257460701 is a deficient number, since it is larger than the sum of its proper divisors (21257471).

20257460701 is an equidigital number, since it uses as much as digits as its factorization.

20257460701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21257470.

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 20257460701 in words is "twenty billion, two hundred fifty-seven million, four hundred sixty thousand, seven hundred one".