61693777463 has 2 divisors, whose sum is σ = 61693777464. Its totient is φ = 61693777462.

The previous prime is 61693777429. The next prime is 61693777471. The reversal of 61693777463 is 36477739616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61693777463 - 2⁸ = 61693777207 is a prime.

It is a super-2 number, since 2×61693777463² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61693777363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30846888731 + 30846888732.

It is an arithmetic number, because the mean of its divisors is an integer number (30846888732).

Almost surely, 2^61693777463 is an apocalyptic number.

61693777463 is a deficient number, since it is larger than the sum of its proper divisors (1).

61693777463 is an equidigital number, since it uses as much as digits as its factorization.

61693777463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24004512, while the sum is 59.

The spelling of 61693777463 in words is "sixty-one billion, six hundred ninety-three million, seven hundred seventy-seven thousand, four hundred sixty-three".