49449106021 has 12 divisors (see below), whose sum is σ = 57529574688. Its totient is φ = 42379683192.

The previous prime is 49449105983. The next prime is 49449106111. The reversal of 49449106021 is 12060194494.

It is a de Polignac number, because none of the positive numbers 2^k-49449106021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49449103021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365350 + ... + 482056.

It is an arithmetic number, because the mean of its divisors is an integer number (4794131224).

Almost surely, 2^49449106021 is an apocalyptic number.

It is an amenable number.

49449106021 is a deficient number, since it is larger than the sum of its proper divisors (8080468667).

49449106021 is a wasteful number, since it uses less digits than its factorization.

49449106021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125368 (or 125361 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 49449106021 in words is "forty-nine billion, four hundred forty-nine million, one hundred six thousand, twenty-one".