47873121981 has 16 divisors (see below), whose sum is σ = 67211236800. Its totient is φ = 30226255488.

The previous prime is 47873121979. The next prime is 47873122013. The reversal of 47873121981 is 18912137874.

It is not a de Polignac number, because 47873121981 - 2¹ = 47873121979 is a prime.

It is a super-2 number, since 2×47873121981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47873121181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56715 + ... + 314583.

It is an arithmetic number, because the mean of its divisors is an integer number (4200702300).

Almost surely, 2^47873121981 is an apocalyptic number.

It is an amenable number.

47873121981 is a deficient number, since it is larger than the sum of its proper divisors (19338114819).

47873121981 is a wasteful number, since it uses less digits than its factorization.

47873121981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261148.

The product of its digits is 677376, while the sum is 51.

The spelling of 47873121981 in words is "forty-seven billion, eight hundred seventy-three million, one hundred twenty-one thousand, nine hundred eighty-one".