49643634679 has 2 divisors, whose sum is σ = 49643634680. Its totient is φ = 49643634678.

The previous prime is 49643634671. The next prime is 49643634751. The reversal of 49643634679 is 97643634694.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49643634679 - 2³ = 49643634671 is a prime.

It is a super-2 number, since 2×49643634679² (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 (49643634671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24821817339 + 24821817340.

It is an arithmetic number, because the mean of its divisors is an integer number (24821817340).

Almost surely, 2^49643634679 is an apocalyptic number.

49643634679 is a deficient number, since it is larger than the sum of its proper divisors (1).

49643634679 is an equidigital number, since it uses as much as digits as its factorization.

49643634679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70543872, while the sum is 61.

The spelling of 49643634679 in words is "forty-nine billion, six hundred forty-three million, six hundred thirty-four thousand, six hundred seventy-nine".