49717390647 has 16 divisors (see below), whose sum is σ = 70490515680. Its totient is φ = 31061332992.

The previous prime is 49717390621. The next prime is 49717390691. The reversal of 49717390647 is 74609371794.

It is not a de Polignac number, because 49717390647 - 2⁷ = 49717390519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49717390447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2080072 + ... + 2103837.

It is an arithmetic number, because the mean of its divisors is an integer number (4405657230).

Almost surely, 2^49717390647 is an apocalyptic number.

49717390647 is a deficient number, since it is larger than the sum of its proper divisors (20773125033).

49717390647 is a wasteful number, since it uses less digits than its factorization.

49717390647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184162.

The product of its (nonzero) digits is 8001504, while the sum is 57.

The spelling of 49717390647 in words is "forty-nine billion, seven hundred seventeen million, three hundred ninety thousand, six hundred forty-seven".