47811290687 has 4 divisors (see below), whose sum is σ = 49890042480. Its totient is φ = 45732538896.

The previous prime is 47811290663. The next prime is 47811290689. The reversal of 47811290687 is 78609211874.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 47811290687 - 2⁸ = 47811290431 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 (47811290689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039375862 + ... + 1039375907.

It is an arithmetic number, because the mean of its divisors is an integer number (12472510620).

Almost surely, 2^47811290687 is an apocalyptic number.

47811290687 is a deficient number, since it is larger than the sum of its proper divisors (2078751793).

47811290687 is a wasteful number, since it uses less digits than its factorization.

47811290687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078751792.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 47811290687 in words is "forty-seven billion, eight hundred eleven million, two hundred ninety thousand, six hundred eighty-seven".