611610639979 has 2 divisors, whose sum is σ = 611610639980. Its totient is φ = 611610639978.

The previous prime is 611610639967. The next prime is 611610640093. The reversal of 611610639979 is 979936016116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611610639979 - 2¹³ = 611610631787 is a prime.

It is not a weakly prime, because it can be changed into another prime (611610633979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305805319989 + 305805319990.

It is an arithmetic number, because the mean of its divisors is an integer number (305805319990).

Almost surely, 2^611610639979 is an apocalyptic number.

611610639979 is a deficient number, since it is larger than the sum of its proper divisors (1).

611610639979 is an equidigital number, since it uses as much as digits as its factorization.

611610639979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 58.

The spelling of 611610639979 in words is "six hundred eleven billion, six hundred ten million, six hundred thirty-nine thousand, nine hundred seventy-nine".