49185779647 has 2 divisors, whose sum is σ = 49185779648. Its totient is φ = 49185779646.

The previous prime is 49185779609. The next prime is 49185779707. The reversal of 49185779647 is 74697758194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49185779647 - 2¹⁵ = 49185746879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49185779347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24592889823 + 24592889824.

It is an arithmetic number, because the mean of its divisors is an integer number (24592889824).

Almost surely, 2^49185779647 is an apocalyptic number.

49185779647 is a deficient number, since it is larger than the sum of its proper divisors (1).

49185779647 is an equidigital number, since it uses as much as digits as its factorization.

49185779647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 106686720, while the sum is 67.

The spelling of 49185779647 in words is "forty-nine billion, one hundred eighty-five million, seven hundred seventy-nine thousand, six hundred forty-seven".