20401915753 has 2 divisors, whose sum is σ = 20401915754. Its totient is φ = 20401915752.

The previous prime is 20401915733. The next prime is 20401915763. The reversal of 20401915753 is 35751910402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20228519529 + 173396224 = 142227^2 + 13168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401915753 is a prime.

It is not a weakly prime, because it can be changed into another prime (20401915733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200957876 + 10200957877.

It is an arithmetic number, because the mean of its divisors is an integer number (10200957877).

Almost surely, 2^20401915753 is an apocalyptic number.

It is an amenable number.

20401915753 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401915753 is an equidigital number, since it uses as much as digits as its factorization.

20401915753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 20401915753 in words is "twenty billion, four hundred one million, nine hundred fifteen thousand, seven hundred fifty-three".