47166887397 has 16 divisors (see below), whose sum is σ = 74351744640. Its totient is φ = 26023109952.

The previous prime is 47166887377. The next prime is 47166887473. The reversal of 47166887397 is 79378866174.

It is not a de Polignac number, because 47166887397 - 2²⁰ = 47165838821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47166887377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38724258 + ... + 38725475.

It is an arithmetic number, because the mean of its divisors is an integer number (4646984040).

Almost surely, 2^47166887397 is an apocalyptic number.

It is an amenable number.

47166887397 is a deficient number, since it is larger than the sum of its proper divisors (27184857243).

47166887397 is a wasteful number, since it uses less digits than its factorization.

47166887397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77449772.

The product of its digits is 85349376, while the sum is 66.

The spelling of 47166887397 in words is "forty-seven billion, one hundred sixty-six million, eight hundred eighty-seven thousand, three hundred ninety-seven".