47320425981 has 24 divisors (see below), whose sum is σ = 68674427640. Its totient is φ = 31398130176.

The previous prime is 47320425979. The next prime is 47320425991. The reversal of 47320425981 is 18952402374.

It can be written as a sum of positive squares in 4 ways, for example, as 7650756 + 47312775225 = 2766^2 + 217515^2 .

It is not a de Polignac number, because 47320425981 - 2¹ = 47320425979 is a prime.

It is a super-2 number, since 2×47320425981² (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 (47320425961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8362105 + ... + 8367761.

It is an arithmetic number, because the mean of its divisors is an integer number (2861434485).

Almost surely, 2^47320425981 is an apocalyptic number.

It is an amenable number.

47320425981 is a deficient number, since it is larger than the sum of its proper divisors (21354001659).

47320425981 is a wasteful number, since it uses less digits than its factorization.

47320425981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9885 (or 9882 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 47320425981 in words is "forty-seven billion, three hundred twenty million, four hundred twenty-five thousand, nine hundred eighty-one".