622511761961 has 2 divisors, whose sum is σ = 622511761962. Its totient is φ = 622511761960.

The previous prime is 622511761951. The next prime is 622511761969. The reversal of 622511761961 is 169167115226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617670246400 + 4841515561 = 785920^2 + 69581^2 .

It is a cyclic number.

It is not a de Polignac number, because 622511761961 - 2²⁶ = 622444653097 is a prime.

It is not a weakly prime, because it can be changed into another prime (622511761969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311255880980 + 311255880981.

It is an arithmetic number, because the mean of its divisors is an integer number (311255880981).

Almost surely, 2^622511761961 is an apocalyptic number.

It is an amenable number.

622511761961 is a deficient number, since it is larger than the sum of its proper divisors (1).

622511761961 is an equidigital number, since it uses as much as digits as its factorization.

622511761961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The spelling of 622511761961 in words is "six hundred twenty-two billion, five hundred eleven million, seven hundred sixty-one thousand, nine hundred sixty-one".