61493454037 has 2 divisors, whose sum is σ = 61493454038. Its totient is φ = 61493454036.

The previous prime is 61493454013. The next prime is 61493454089. The reversal of 61493454037 is 73045439416.

61493454037 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., 44645154436 + 16848299601 = 211294^2 + 129801^2 .

It is a cyclic number.

It is not a de Polignac number, because 61493454037 - 2³⁵ = 27133715669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61493484037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30746727018 + 30746727019.

It is an arithmetic number, because the mean of its divisors is an integer number (30746727019).

Almost surely, 2^61493454037 is an apocalyptic number.

It is an amenable number.

61493454037 is a deficient number, since it is larger than the sum of its proper divisors (1).

61493454037 is an equidigital number, since it uses as much as digits as its factorization.

61493454037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 61493454037 in words is "sixty-one billion, four hundred ninety-three million, four hundred fifty-four thousand, thirty-seven".