49042194881 has 4 divisors (see below), whose sum is σ = 51927029892. Its totient is φ = 46157359872.

The previous prime is 49042194871. The next prime is 49042194911. The reversal of 49042194881 is 18849124094.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18355914256 + 30686280625 = 135484^2 + 175175^2 .

It is not a de Polignac number, because 49042194881 - 2²² = 49038000577 is a prime.

It is a super-2 number, since 2×49042194881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49042194871) 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, 1442417480 + ... + 1442417513.

It is an arithmetic number, because the mean of its divisors is an integer number (12981757473).

Almost surely, 2^49042194881 is an apocalyptic number.

It is an amenable number.

49042194881 is a deficient number, since it is larger than the sum of its proper divisors (2884835011).

49042194881 is a wasteful number, since it uses less digits than its factorization.

49042194881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884835010.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 49042194881 in words is "forty-nine billion, forty-two million, one hundred ninety-four thousand, eight hundred eighty-one".