49055217947 has 4 divisors (see below), whose sum is σ = 49183299840. Its totient is φ = 48927136056.

The previous prime is 49055217917. The next prime is 49055217983. The reversal of 49055217947 is 74971255094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49055217947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49055217917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64040372 + ... + 64041137.

It is an arithmetic number, because the mean of its divisors is an integer number (12295824960).

Almost surely, 2^49055217947 is an apocalyptic number.

49055217947 is a deficient number, since it is larger than the sum of its proper divisors (128081893).

49055217947 is a wasteful number, since it uses less digits than its factorization.

49055217947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128081892.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 49055217947 in words is "forty-nine billion, fifty-five million, two hundred seventeen thousand, nine hundred forty-seven".