61733620393 has 2 divisors, whose sum is σ = 61733620394. Its totient is φ = 61733620392.

The previous prime is 61733620387. The next prime is 61733620411. The reversal of 61733620393 is 39302633716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58162004224 + 3571616169 = 241168^2 + 59763^2 .

It is a cyclic number.

It is not a de Polignac number, because 61733620393 - 2³³ = 53143685801 is a prime.

It is a super-2 number, since 2×61733620393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61733620313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30866810196 + 30866810197.

It is an arithmetic number, because the mean of its divisors is an integer number (30866810197).

Almost surely, 2^61733620393 is an apocalyptic number.

It is an amenable number.

61733620393 is a deficient number, since it is larger than the sum of its proper divisors (1).

61733620393 is an equidigital number, since it uses as much as digits as its factorization.

61733620393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 43.

The spelling of 61733620393 in words is "sixty-one billion, seven hundred thirty-three million, six hundred twenty thousand, three hundred ninety-three".