7628795429621 has 2 divisors, whose sum is σ = 7628795429622. Its totient is φ = 7628795429620.

The previous prime is 7628795429599. The next prime is 7628795429641. The reversal of 7628795429621 is 1269245978267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5457036160900 + 2171759268721 = 2336030^2 + 1473689^2 .

It is a cyclic number.

It is not a de Polignac number, because 7628795429621 - 2¹⁴ = 7628795413237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7628795429641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3814397714810 + 3814397714811.

It is an arithmetic number, because the mean of its divisors is an integer number (3814397714811).

Almost surely, 2^{7628795429621} is an apocalyptic number.

It is an amenable number.

7628795429621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7628795429621 is an equidigital number, since it uses as much as digits as its factorization.

7628795429621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 68.

The spelling of 7628795429621 in words is "seven trillion, six hundred twenty-eight billion, seven hundred ninety-five million, four hundred twenty-nine thousand, six hundred twenty-one".