20257460672 has 14 divisors (see below), whose sum is σ = 40198398648. Its totient is φ = 10128730304.

The previous prime is 20257460633. The next prime is 20257460677. The reversal of 20257460672 is 27606475202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257460677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158261348 + ... + 158261475.

Almost surely, 2^20257460672 is an apocalyptic number.

It is an amenable number.

20257460672 is a deficient number, since it is larger than the sum of its proper divisors (19940937976).

20257460672 is an equidigital number, since it uses as much as digits as its factorization.

20257460672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316522835 (or 316522825 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 20257460672 in words is "twenty billion, two hundred fifty-seven million, four hundred sixty thousand, six hundred seventy-two".