2536634342621 has 2 divisors, whose sum is σ = 2536634342622. Its totient is φ = 2536634342620.

The previous prime is 2536634342609. The next prime is 2536634342633. The reversal of 2536634342621 is 1262434366352.

It is a balanced prime because it is at equal distance from previous prime (2536634342609) and next prime (2536634342633).

It can be written as a sum of positive squares in only one way, i.e., 1418983646521 + 1117650696100 = 1191211^2 + 1057190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2536634342621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2536634342681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268317171310 + 1268317171311.

It is an arithmetic number, because the mean of its divisors is an integer number (1268317171311).

Almost surely, 2^{2536634342621} is an apocalyptic number.

It is an amenable number.

2536634342621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2536634342621 is an equidigital number, since it uses as much as digits as its factorization.

2536634342621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 47.

The spelling of 2536634342621 in words is "two trillion, five hundred thirty-six billion, six hundred thirty-four million, three hundred forty-two thousand, six hundred twenty-one".