611855103901 has 2 divisors, whose sum is σ = 611855103902. Its totient is φ = 611855103900.

The previous prime is 611855103829. The next prime is 611855103953. The reversal of 611855103901 is 109301558116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501793723876 + 110061380025 = 708374^2 + 331755^2 .

It is a cyclic number.

It is not a de Polignac number, because 611855103901 - 2⁷ = 611855103773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611855107901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305927551950 + 305927551951.

It is an arithmetic number, because the mean of its divisors is an integer number (305927551951).

Almost surely, 2^611855103901 is an apocalyptic number.

It is an amenable number.

611855103901 is a deficient number, since it is larger than the sum of its proper divisors (1).

611855103901 is an equidigital number, since it uses as much as digits as its factorization.

611855103901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 611855103901 in words is "six hundred eleven billion, eight hundred fifty-five million, one hundred three thousand, nine hundred one".