61270748369 has 2 divisors, whose sum is σ = 61270748370. Its totient is φ = 61270748368.

The previous prime is 61270748353. The next prime is 61270748381. The reversal of 61270748369 is 96384707216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51580314769 + 9690433600 = 227113^2 + 98440^2 .

It is a cyclic number.

It is not a de Polignac number, because 61270748369 - 2⁴ = 61270748353 is a prime.

It is a super-2 number, since 2×61270748369² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61270748369.

It is not a weakly prime, because it can be changed into another prime (61270748309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30635374184 + 30635374185.

It is an arithmetic number, because the mean of its divisors is an integer number (30635374185).

Almost surely, 2^61270748369 is an apocalyptic number.

It is an amenable number.

61270748369 is a deficient number, since it is larger than the sum of its proper divisors (1).

61270748369 is an equidigital number, since it uses as much as digits as its factorization.

61270748369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 61270748369 in words is "sixty-one billion, two hundred seventy million, seven hundred forty-eight thousand, three hundred sixty-nine".