2535620401649 has 2 divisors, whose sum is σ = 2535620401650. Its totient is φ = 2535620401648.

The previous prime is 2535620401603. The next prime is 2535620401751. The reversal of 2535620401649 is 9461040265352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2357354895424 + 178265506225 = 1535368^2 + 422215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2535620401649 - 2²⁰ = 2535619353073 is a prime.

It is not a weakly prime, because it can be changed into another prime (2535620481649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1267810200824 + 1267810200825.

It is an arithmetic number, because the mean of its divisors is an integer number (1267810200825).

Almost surely, 2^{2535620401649} is an apocalyptic number.

It is an amenable number.

2535620401649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2535620401649 is an equidigital number, since it uses as much as digits as its factorization.

2535620401649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 2535620401649 in words is "two trillion, five hundred thirty-five billion, six hundred twenty million, four hundred one thousand, six hundred forty-nine".