2015732624621 has 2 divisors, whose sum is σ = 2015732624622. Its totient is φ = 2015732624620.

The previous prime is 2015732624599. The next prime is 2015732624623. The reversal of 2015732624621 is 1264262375102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2015590681225 + 141943396 = 1419715^2 + 11914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015732624621 - 2²⁶ = 2015665515757 is a prime.

It is a super-2 number, since 2×2015732624621² (a number of 25 digits) contains 22 as substring.

Together with 2015732624623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2015732624623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007866312310 + 1007866312311.

It is an arithmetic number, because the mean of its divisors is an integer number (1007866312311).

Almost surely, 2^{2015732624621} is an apocalyptic number.

It is an amenable number.

2015732624621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015732624621 is an equidigital number, since it uses as much as digits as its factorization.

2015732624621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

Adding to 2015732624621 its reverse (1264262375102), we get a palindrome (3279994999723).

The spelling of 2015732624621 in words is "two trillion, fifteen billion, seven hundred thirty-two million, six hundred twenty-four thousand, six hundred twenty-one".