49717390691 has 2 divisors, whose sum is σ = 49717390692. Its totient is φ = 49717390690.

The previous prime is 49717390621. The next prime is 49717390703. The reversal of 49717390691 is 19609371794.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49717390691 - 2¹⁴ = 49717374307 is a prime.

It is not a weakly prime, because it can be changed into another prime (49717390601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24858695345 + 24858695346.

It is an arithmetic number, because the mean of its divisors is an integer number (24858695346).

Almost surely, 2^49717390691 is an apocalyptic number.

49717390691 is a deficient number, since it is larger than the sum of its proper divisors (1).

49717390691 is an equidigital number, since it uses as much as digits as its factorization.

49717390691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The spelling of 49717390691 in words is "forty-nine billion, seven hundred seventeen million, three hundred ninety thousand, six hundred ninety-one".