61299102244837 has 2 divisors, whose sum is σ = 61299102244838. Its totient is φ = 61299102244836.

The previous prime is 61299102244747. The next prime is 61299102244843. The reversal of 61299102244837 is 73844220199216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49344007671841 + 11955094572996 = 7024529^2 + 3457614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61299102244837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61299102244867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30649551122418 + 30649551122419.

It is an arithmetic number, because the mean of its divisors is an integer number (30649551122419).

Almost surely, 2^{61299102244837} is an apocalyptic number.

It is an amenable number.

61299102244837 is a deficient number, since it is larger than the sum of its proper divisors (1).

61299102244837 is an equidigital number, since it uses as much as digits as its factorization.

61299102244837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 61299102244837 in words is "sixty-one trillion, two hundred ninety-nine billion, one hundred two million, two hundred forty-four thousand, eight hundred thirty-seven".