61273455941 has 2 divisors, whose sum is σ = 61273455942. Its totient is φ = 61273455940.

The previous prime is 61273455937. The next prime is 61273455973. The reversal of 61273455941 is 14955437216.

It is a happy number.

61273455941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61180043716 + 93412225 = 247346^2 + 9665^2 .

It is a cyclic number.

It is not a de Polignac number, because 61273455941 - 2² = 61273455937 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61273455641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30636727970 + 30636727971.

It is an arithmetic number, because the mean of its divisors is an integer number (30636727971).

Almost surely, 2^61273455941 is an apocalyptic number.

It is an amenable number.

61273455941 is a deficient number, since it is larger than the sum of its proper divisors (1).

61273455941 is an equidigital number, since it uses as much as digits as its factorization.

61273455941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The spelling of 61273455941 in words is "sixty-one billion, two hundred seventy-three million, four hundred fifty-five thousand, nine hundred forty-one".