61452134013989 has 2 divisors, whose sum is σ = 61452134013990. Its totient is φ = 61452134013988.

The previous prime is 61452134013889. The next prime is 61452134014027. The reversal of 61452134013989 is 98931043125416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61356750633025 + 95383380964 = 7833055^2 + 308842^2 .

It is a cyclic number.

It is not a de Polignac number, because 61452134013989 - 2⁴⁴ = 43859947969573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61452134013089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30726067006994 + 30726067006995.

It is an arithmetic number, because the mean of its divisors is an integer number (30726067006995).

Almost surely, 2^{61452134013989} is an apocalyptic number.

It is an amenable number.

61452134013989 is a deficient number, since it is larger than the sum of its proper divisors (1).

61452134013989 is an equidigital number, since it uses as much as digits as its factorization.

61452134013989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 61452134013989 in words is "sixty-one trillion, four hundred fifty-two billion, one hundred thirty-four million, thirteen thousand, nine hundred eighty-nine".