1626043752121 has 2 divisors, whose sum is σ = 1626043752122. Its totient is φ = 1626043752120.

The previous prime is 1626043752101. The next prime is 1626043752149. The reversal of 1626043752121 is 1212573406261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1063827216400 + 562216535721 = 1031420^2 + 749811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1626043752121 - 2²⁵ = 1626010197689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1626043752101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813021876060 + 813021876061.

It is an arithmetic number, because the mean of its divisors is an integer number (813021876061).

Almost surely, 2^{1626043752121} is an apocalyptic number.

It is an amenable number.

1626043752121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626043752121 is an equidigital number, since it uses as much as digits as its factorization.

1626043752121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 1626043752121 in words is "one trillion, six hundred twenty-six billion, forty-three million, seven hundred fifty-two thousand, one hundred twenty-one".