611851883630677 has 2 divisors, whose sum is σ = 611851883630678. Its totient is φ = 611851883630676.

The previous prime is 611851883630629. The next prime is 611851883630753. The reversal of 611851883630677 is 776036388158116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359155524057201 + 252696359573476 = 18951399^2 + 15896426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611851883630677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611851883633677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305925941815338 + 305925941815339.

It is an arithmetic number, because the mean of its divisors is an integer number (305925941815339).

Almost surely, 2^{611851883630677} is an apocalyptic number.

It is an amenable number.

611851883630677 is a deficient number, since it is larger than the sum of its proper divisors (1).

611851883630677 is an equidigital number, since it uses as much as digits as its factorization.

611851883630677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243855360, while the sum is 70.

The spelling of 611851883630677 in words is "six hundred eleven trillion, eight hundred fifty-one billion, eight hundred eighty-three million, six hundred thirty thousand, six hundred seventy-seven".