49505779897 has 16 divisors (see below), whose sum is σ = 59950259200. Its totient is φ = 39933939600.

The previous prime is 49505779877. The next prime is 49505779979. The reversal of 49505779897 is 79897750594.

It is a cyclic number.

It is not a de Polignac number, because 49505779897 - 2⁷ = 49505779769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49505779877) 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, 1212447 + ... + 1252612.

It is an arithmetic number, because the mean of its divisors is an integer number (3746891200).

Almost surely, 2^49505779897 is an apocalyptic number.

It is an amenable number.

49505779897 is a deficient number, since it is larger than the sum of its proper divisors (10444479303).

49505779897 is a wasteful number, since it uses less digits than its factorization.

49505779897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465236.

The product of its (nonzero) digits is 200037600, while the sum is 70.

The spelling of 49505779897 in words is "forty-nine billion, five hundred five million, seven hundred seventy-nine thousand, eight hundred ninety-seven".