49355386649 has 2 divisors, whose sum is σ = 49355386650. Its totient is φ = 49355386648.

The previous prime is 49355386583. The next prime is 49355386667. The reversal of 49355386649 is 94668355394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35781505600 + 13573881049 = 189160^2 + 116507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49355386649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49355386591 and 49355386600.

It is not a weakly prime, because it can be changed into another prime (49355380649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24677693324 + 24677693325.

It is an arithmetic number, because the mean of its divisors is an integer number (24677693325).

Almost surely, 2^49355386649 is an apocalyptic number.

It is an amenable number.

49355386649 is a deficient number, since it is larger than the sum of its proper divisors (1).

49355386649 is an equidigital number, since it uses as much as digits as its factorization.

49355386649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83980800, while the sum is 62.

The spelling of 49355386649 in words is "forty-nine billion, three hundred fifty-five million, three hundred eighty-six thousand, six hundred forty-nine".