947281281133 has 8 divisors (see below), whose sum is σ = 1033406968320. Its totient is φ = 861157128480.

The previous prime is 947281281077. The next prime is 947281281139. The reversal of 947281281133 is 331182182749.

947281281133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 947281281133 - 2¹³ = 947281272941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947281281139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186548 + ... + 1817266.

It is an arithmetic number, because the mean of its divisors is an integer number (129175871040).

Almost surely, 2^947281281133 is an apocalyptic number.

It is an amenable number.

947281281133 is a deficient number, since it is larger than the sum of its proper divisors (86125687187).

947281281133 is a wasteful number, since it uses less digits than its factorization.

947281281133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767267.

The product of its digits is 580608, while the sum is 49.

The spelling of 947281281133 in words is "nine hundred forty-seven billion, two hundred eighty-one million, two hundred eighty-one thousand, one hundred thirty-three".