611642717377 has 2 divisors, whose sum is σ = 611642717378. Its totient is φ = 611642717376.

The previous prime is 611642717351. The next prime is 611642717383. The reversal of 611642717377 is 773717246116.

611642717377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353577701376 + 258065016001 = 594624^2 + 508001^2 .

It is a cyclic number.

It is not a de Polignac number, because 611642717377 - 2¹⁹ = 611642193089 is a prime.

It is not a weakly prime, because it can be changed into another prime (611642717977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305821358688 + 305821358689.

It is an arithmetic number, because the mean of its divisors is an integer number (305821358689).

Almost surely, 2^611642717377 is an apocalyptic number.

It is an amenable number.

611642717377 is a deficient number, since it is larger than the sum of its proper divisors (1).

611642717377 is an equidigital number, since it uses as much as digits as its factorization.

611642717377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2074464, while the sum is 52.

The spelling of 611642717377 in words is "six hundred eleven billion, six hundred forty-two million, seven hundred seventeen thousand, three hundred seventy-seven".