47405994091 has 4 divisors (see below), whose sum is σ = 47938645800. Its totient is φ = 46873342384.

The previous prime is 47405994073. The next prime is 47405994109. The reversal of 47405994091 is 19049950474.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (47405994073) and next prime (47405994109).

It is a cyclic number.

It is not a de Polignac number, because 47405994091 - 2¹⁷ = 47405863019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47405994791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266325721 + ... + 266325898.

It is an arithmetic number, because the mean of its divisors is an integer number (11984661450).

Almost surely, 2^47405994091 is an apocalyptic number.

47405994091 is a deficient number, since it is larger than the sum of its proper divisors (532651709).

47405994091 is an equidigital number, since it uses as much as digits as its factorization.

47405994091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532651708.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 47405994091 in words is "forty-seven billion, four hundred five million, nine hundred ninety-four thousand, ninety-one".