47111991657 has 8 divisors (see below), whose sum is σ = 62818336800. Its totient is φ = 31406820480.

The previous prime is 47111991607. The next prime is 47111991679. The reversal of 47111991657 is 75619911174.

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

It is not a de Polignac number, because 47111991657 - 2¹⁰ = 47111990633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47111991607) 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, 195144 + ... + 363737.

It is an arithmetic number, because the mean of its divisors is an integer number (7852292100).

Almost surely, 2^47111991657 is an apocalyptic number.

It is an amenable number.

47111991657 is a deficient number, since it is larger than the sum of its proper divisors (15706345143).

47111991657 is a wasteful number, since it uses less digits than its factorization.

47111991657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586983.

The product of its digits is 476280, while the sum is 51.

The spelling of 47111991657 in words is "forty-seven billion, one hundred eleven million, nine hundred ninety-one thousand, six hundred fifty-seven".