47243427887 has 2 divisors, whose sum is σ = 47243427888. Its totient is φ = 47243427886.

The previous prime is 47243427799. The next prime is 47243427923. The reversal of 47243427887 is 78872434274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47243427887 - 2¹⁶ = 47243362351 is a prime.

It is a super-3 number, since 3×47243427887³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47243427487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23621713943 + 23621713944.

It is an arithmetic number, because the mean of its divisors is an integer number (23621713944).

Almost surely, 2^47243427887 is an apocalyptic number.

47243427887 is a deficient number, since it is larger than the sum of its proper divisors (1).

47243427887 is an equidigital number, since it uses as much as digits as its factorization.

47243427887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16859136, while the sum is 56.

The spelling of 47243427887 in words is "forty-seven billion, two hundred forty-three million, four hundred twenty-seven thousand, eight hundred eighty-seven".