61146360608639 has 2 divisors, whose sum is σ = 61146360608640. Its totient is φ = 61146360608638.

The previous prime is 61146360608633. The next prime is 61146360608651. The reversal of 61146360608639 is 93680606364116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61146360608639 - 2⁸ = 61146360608383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61146360608633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30573180304319 + 30573180304320.

It is an arithmetic number, because the mean of its divisors is an integer number (30573180304320).

Almost surely, 2^{61146360608639} is an apocalyptic number.

61146360608639 is a deficient number, since it is larger than the sum of its proper divisors (1).

61146360608639 is an equidigital number, since it uses as much as digits as its factorization.

61146360608639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 59.

The spelling of 61146360608639 in words is "sixty-one trillion, one hundred forty-six billion, three hundred sixty million, six hundred eight thousand, six hundred thirty-nine".