61264413250399 has 2 divisors, whose sum is σ = 61264413250400. Its totient is φ = 61264413250398.

The previous prime is 61264413250373. The next prime is 61264413250409. The reversal of 61264413250399 is 99305231446216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61264413250399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61264413250349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30632206625199 + 30632206625200.

It is an arithmetic number, because the mean of its divisors is an integer number (30632206625200).

Almost surely, 2^{61264413250399} is an apocalyptic number.

61264413250399 is a deficient number, since it is larger than the sum of its proper divisors (1).

61264413250399 is an equidigital number, since it uses as much as digits as its factorization.

61264413250399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 61264413250399 in words is "sixty-one trillion, two hundred sixty-four billion, four hundred thirteen million, two hundred fifty thousand, three hundred ninety-nine".