49561723751 has 2 divisors, whose sum is σ = 49561723752. Its totient is φ = 49561723750.

The previous prime is 49561723747. The next prime is 49561723793. The reversal of 49561723751 is 15732716594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49561723751 - 2² = 49561723747 is a prime.

It is a super-2 number, since 2×49561723751² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49561723751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49561723741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24780861875 + 24780861876.

It is an arithmetic number, because the mean of its divisors is an integer number (24780861876).

Almost surely, 2^49561723751 is an apocalyptic number.

49561723751 is a deficient number, since it is larger than the sum of its proper divisors (1).

49561723751 is an equidigital number, since it uses as much as digits as its factorization.

49561723751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 50.

The spelling of 49561723751 in words is "forty-nine billion, five hundred sixty-one million, seven hundred twenty-three thousand, seven hundred fifty-one".