49681000121 has 16 divisors (see below), whose sum is σ = 51570564864. Its totient is φ = 47821161024.

The previous prime is 49681000111. The next prime is 49681000129. The reversal of 49681000121 is 12100018694.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49681000121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49681000129) 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, 4159460 + ... + 4171386.

It is an arithmetic number, because the mean of its divisors is an integer number (3223160304).

Almost surely, 2^49681000121 is an apocalyptic number.

It is an amenable number.

49681000121 is a deficient number, since it is larger than the sum of its proper divisors (1889564743).

49681000121 is a wasteful number, since it uses less digits than its factorization.

49681000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 49681000121 in words is "forty-nine billion, six hundred eighty-one million, one hundred twenty-one", and thus it is an aban number.