61330738272497 has 2 divisors, whose sum is σ = 61330738272498. Its totient is φ = 61330738272496.

The previous prime is 61330738272457. The next prime is 61330738272539. The reversal of 61330738272497 is 79427283703316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39387284813041 + 21943453459456 = 6275929^2 + 4684384^2 .

It is a cyclic number.

It is not a de Polignac number, because 61330738272497 - 2²⁶ = 61330671163633 is a prime.

It is a super-2 number, since 2×61330738272497² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61330738272457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30665369136248 + 30665369136249.

It is an arithmetic number, because the mean of its divisors is an integer number (30665369136249).

Almost surely, 2^{61330738272497} is an apocalyptic number.

It is an amenable number.

61330738272497 is a deficient number, since it is larger than the sum of its proper divisors (1).

61330738272497 is an equidigital number, since it uses as much as digits as its factorization.

61330738272497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64012032, while the sum is 62.

The spelling of 61330738272497 in words is "sixty-one trillion, three hundred thirty billion, seven hundred thirty-eight million, two hundred seventy-two thousand, four hundred ninety-seven".