7610128621 has 2 divisors, whose sum is σ = 7610128622. Its totient is φ = 7610128620.

The previous prime is 7610128597. The next prime is 7610128633. The reversal of 7610128621 is 1268210167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7406495721 + 203632900 = 86061^2 + 14270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7610128621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7610128921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3805064310 + 3805064311.

It is an arithmetic number, because the mean of its divisors is an integer number (3805064311).

Almost surely, 2^7610128621 is an apocalyptic number.

It is an amenable number.

7610128621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7610128621 is an equidigital number, since it uses as much as digits as its factorization.

7610128621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 7610128621 is about 87236.0511543250. The cubic root of 7610128621 is about 1966.9681709761.

Adding to 7610128621 its reverse (1268210167), we get a palindrome (8878338788).

The spelling of 7610128621 in words is "seven billion, six hundred ten million, one hundred twenty-eight thousand, six hundred twenty-one".