61614643414657 has 2 divisors, whose sum is σ = 61614643414658. Its totient is φ = 61614643414656.

The previous prime is 61614643414637. The next prime is 61614643414691. The reversal of 61614643414657 is 75641434641616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58409197193281 + 3205446221376 = 7642591^2 + 1790376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61614643414657 is a prime.

It is not a weakly prime, because it can be changed into another prime (61614643414637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30807321707328 + 30807321707329.

It is an arithmetic number, because the mean of its divisors is an integer number (30807321707329).

Almost surely, 2^{61614643414657} is an apocalyptic number.

It is an amenable number.

61614643414657 is a deficient number, since it is larger than the sum of its proper divisors (1).

61614643414657 is an equidigital number, since it uses as much as digits as its factorization.

61614643414657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 58.

The spelling of 61614643414657 in words is "sixty-one trillion, six hundred fourteen billion, six hundred forty-three million, four hundred fourteen thousand, six hundred fifty-seven".