61963810499 has 2 divisors, whose sum is σ = 61963810500. Its totient is φ = 61963810498.

The previous prime is 61963810471. The next prime is 61963810589. The reversal of 61963810499 is 99401836916.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61963810499 is a prime.

It is not a weakly prime, because it can be changed into another prime (61963810099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30981905249 + 30981905250.

It is an arithmetic number, because the mean of its divisors is an integer number (30981905250).

Almost surely, 2^61963810499 is an apocalyptic number.

61963810499 is a deficient number, since it is larger than the sum of its proper divisors (1).

61963810499 is an equidigital number, since it uses as much as digits as its factorization.

61963810499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 61963810499 in words is "sixty-one billion, nine hundred sixty-three million, eight hundred ten thousand, four hundred ninety-nine".