7455630250021 has 2 divisors, whose sum is σ = 7455630250022. Its totient is φ = 7455630250020.

The previous prime is 7455630249989. The next prime is 7455630250051. The reversal of 7455630250021 is 1200520365547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7206599309121 + 249030940900 = 2684511^2 + 499030^2 .

It is a cyclic number.

It is not a de Polignac number, because 7455630250021 - 2⁵ = 7455630249989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7455630250051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3727815125010 + 3727815125011.

It is an arithmetic number, because the mean of its divisors is an integer number (3727815125011).

Almost surely, 2^{7455630250021} is an apocalyptic number.

It is an amenable number.

7455630250021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7455630250021 is an equidigital number, since it uses as much as digits as its factorization.

7455630250021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 7455630250021 in words is "seven trillion, four hundred fifty-five billion, six hundred thirty million, two hundred fifty thousand, twenty-one".