611622205655677 has 2 divisors, whose sum is σ = 611622205655678. Its totient is φ = 611622205655676.

The previous prime is 611622205655621. The next prime is 611622205655707. The reversal of 611622205655677 is 776556502226116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389218999505956 + 222403206149721 = 19728634^2 + 14913189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611622205655677 is a prime.

It is a super-2 number, since 2×611622205655677² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611622205655077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305811102827838 + 305811102827839.

It is an arithmetic number, because the mean of its divisors is an integer number (305811102827839).

Almost surely, 2^{611622205655677} is an apocalyptic number.

It is an amenable number.

611622205655677 is a deficient number, since it is larger than the sum of its proper divisors (1).

611622205655677 is an equidigital number, since it uses as much as digits as its factorization.

611622205655677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504000, while the sum is 61.

The spelling of 611622205655677 in words is "six hundred eleven trillion, six hundred twenty-two billion, two hundred five million, six hundred fifty-five thousand, six hundred seventy-seven".