20154256013 has 8 divisors (see below), whose sum is σ = 20234491200. Its totient is φ = 20074177728.

The previous prime is 20154255971. The next prime is 20154256033. The reversal of 20154256013 is 31065245102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20154256013 - 2³² = 15859288717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154256033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221618 + ... + 299036.

It is an arithmetic number, because the mean of its divisors is an integer number (2529311400).

Almost surely, 2^20154256013 is an apocalyptic number.

It is an amenable number.

20154256013 is a deficient number, since it is larger than the sum of its proper divisors (80235187).

20154256013 is an equidigital number, since it uses as much as digits as its factorization.

20154256013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78451.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 20154256013 in words is "twenty billion, one hundred fifty-four million, two hundred fifty-six thousand, thirteen".