49354232561 has 2 divisors, whose sum is σ = 49354232562. Its totient is φ = 49354232560.

The previous prime is 49354232509. The next prime is 49354232563. The reversal of 49354232561 is 16523245394.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29965341025 + 19388891536 = 173105^2 + 139244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49354232561 is a prime.

Together with 49354232563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49354232563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24677116280 + 24677116281.

It is an arithmetic number, because the mean of its divisors is an integer number (24677116281).

Almost surely, 2^49354232561 is an apocalyptic number.

It is an amenable number.

49354232561 is a deficient number, since it is larger than the sum of its proper divisors (1).

49354232561 is an equidigital number, since it uses as much as digits as its factorization.

49354232561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 44.

The spelling of 49354232561 in words is "forty-nine billion, three hundred fifty-four million, two hundred thirty-two thousand, five hundred sixty-one".