47452086891 has 24 divisors (see below), whose sum is σ = 74779876080. Its totient is φ = 28756190400.

The previous prime is 47452086887. The next prime is 47452087009. The reversal of 47452086891 is 19868025474.

It is a happy number.

47452086891 is a `hidden beast` number, since 47 + 452 + 0 + 8 + 68 + 91 = 666.

47452086891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47452086891 - 2² = 47452086887 is a prime.

It is a super-2 number, since 2×47452086891² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47452086691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1886425 + ... + 1911413.

It is an arithmetic number, because the mean of its divisors is an integer number (3115828170).

Almost surely, 2^47452086891 is an apocalyptic number.

47452086891 is a deficient number, since it is larger than the sum of its proper divisors (27327789189).

47452086891 is a wasteful number, since it uses less digits than its factorization.

47452086891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44187 (or 44184 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 47452086891 in words is "forty-seven billion, four hundred fifty-two million, eighty-six thousand, eight hundred ninety-one".