61264391602499 has 2 divisors, whose sum is σ = 61264391602500. Its totient is φ = 61264391602498.

The previous prime is 61264391602493. The next prime is 61264391602523. The reversal of 61264391602499 is 99420619346216.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61264391602499 is a prime.

It is not a weakly prime, because it can be changed into another prime (61264391602493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30632195801249 + 30632195801250.

It is an arithmetic number, because the mean of its divisors is an integer number (30632195801250).

Almost surely, 2^{61264391602499} is an apocalyptic number.

61264391602499 is a deficient number, since it is larger than the sum of its proper divisors (1).

61264391602499 is an equidigital number, since it uses as much as digits as its factorization.

61264391602499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30233088, while the sum is 62.

The spelling of 61264391602499 in words is "sixty-one trillion, two hundred sixty-four billion, three hundred ninety-one million, six hundred two thousand, four hundred ninety-nine".