47225643991 has 2 divisors, whose sum is σ = 47225643992. Its totient is φ = 47225643990.

The previous prime is 47225643977. The next prime is 47225644049. The reversal of 47225643991 is 19934652274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47225643991 - 2¹⁹ = 47225119703 is a prime.

It is a super-2 number, since 2×47225643991² (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 (47226643991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23612821995 + 23612821996.

It is an arithmetic number, because the mean of its divisors is an integer number (23612821996).

Almost surely, 2^47225643991 is an apocalyptic number.

47225643991 is a deficient number, since it is larger than the sum of its proper divisors (1).

47225643991 is an equidigital number, since it uses as much as digits as its factorization.

47225643991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The spelling of 47225643991 in words is "forty-seven billion, two hundred twenty-five million, six hundred forty-three thousand, nine hundred ninety-one".