61650700149013 has 2 divisors, whose sum is σ = 61650700149014. Its totient is φ = 61650700149012.

The previous prime is 61650700148879. The next prime is 61650700149029. The reversal of 61650700149013 is 31094100705616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33162199547569 + 28488500601444 = 5758663^2 + 5337462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61650700149013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61650700149053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30825350074506 + 30825350074507.

It is an arithmetic number, because the mean of its divisors is an integer number (30825350074507).

Almost surely, 2^{61650700149013} is an apocalyptic number.

It is an amenable number.

61650700149013 is a deficient number, since it is larger than the sum of its proper divisors (1).

61650700149013 is an equidigital number, since it uses as much as digits as its factorization.

61650700149013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 61650700149013 in words is "sixty-one trillion, six hundred fifty billion, seven hundred million, one hundred forty-nine thousand, thirteen".