611207441081 has 2 divisors, whose sum is σ = 611207441082. Its totient is φ = 611207441080.

The previous prime is 611207441023. The next prime is 611207441197. The reversal of 611207441081 is 180144702116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610092215056 + 1115226025 = 781084^2 + 33395^2 .

It is a cyclic number.

It is not a de Polignac number, because 611207441081 - 2⁶ = 611207441017 is a prime.

It is a super-2 number, since 2×611207441081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (611207441021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305603720540 + 305603720541.

It is an arithmetic number, because the mean of its divisors is an integer number (305603720541).

Almost surely, 2^611207441081 is an apocalyptic number.

It is an amenable number.

611207441081 is a deficient number, since it is larger than the sum of its proper divisors (1).

611207441081 is an equidigital number, since it uses as much as digits as its factorization.

611207441081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 611207441081 in words is "six hundred eleven billion, two hundred seven million, four hundred forty-one thousand, eighty-one".