61712733739 has 2 divisors, whose sum is σ = 61712733740. Its totient is φ = 61712733738.

The previous prime is 61712733703. The next prime is 61712733749. The reversal of 61712733739 is 93733721716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61712733739 - 2⁹ = 61712733227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61712733692 and 61712733701.

It is not a weakly prime, because it can be changed into another prime (61712733749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30856366869 + 30856366870.

It is an arithmetic number, because the mean of its divisors is an integer number (30856366870).

Almost surely, 2^61712733739 is an apocalyptic number.

61712733739 is a deficient number, since it is larger than the sum of its proper divisors (1).

61712733739 is an equidigital number, since it uses as much as digits as its factorization.

61712733739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000188, while the sum is 49.

The spelling of 61712733739 in words is "sixty-one billion, seven hundred twelve million, seven hundred thirty-three thousand, seven hundred thirty-nine".