49348839891 has 16 divisors (see below), whose sum is σ = 73145676800. Its totient is φ = 29388886560.

The previous prime is 49348839889. The next prime is 49348839907. The reversal of 49348839891 is 19893884394.

It is not a de Polignac number, because 49348839891 - 2¹ = 49348839889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49348839811) 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, 20407741 + ... + 20410158.

It is an arithmetic number, because the mean of its divisors is an integer number (4571604800).

Almost surely, 2^49348839891 is an apocalyptic number.

49348839891 is a deficient number, since it is larger than the sum of its proper divisors (23796836909).

49348839891 is a wasteful number, since it uses less digits than its factorization.

49348839891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40817946.

The product of its digits is 53747712, while the sum is 66.

The spelling of 49348839891 in words is "forty-nine billion, three hundred forty-eight million, eight hundred thirty-nine thousand, eight hundred ninety-one".