47924422981 has 2 divisors, whose sum is σ = 47924422982. Its totient is φ = 47924422980.

The previous prime is 47924422957. The next prime is 47924423017. The reversal of 47924422981 is 18922442974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26047054881 + 21877368100 = 161391^2 + 147910^2 .

It is a cyclic number.

It is not a de Polignac number, because 47924422981 - 2⁷ = 47924422853 is a prime.

It is a super-2 number, since 2×47924422981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47924422181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23962211490 + 23962211491.

It is an arithmetic number, because the mean of its divisors is an integer number (23962211491).

Almost surely, 2^47924422981 is an apocalyptic number.

It is an amenable number.

47924422981 is a deficient number, since it is larger than the sum of its proper divisors (1).

47924422981 is an equidigital number, since it uses as much as digits as its factorization.

47924422981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 52.

The spelling of 47924422981 in words is "forty-seven billion, nine hundred twenty-four million, four hundred twenty-two thousand, nine hundred eighty-one".