47145939899 has 4 divisors (see below), whose sum is σ = 47147420040. Its totient is φ = 47144459760.

The previous prime is 47145939859. The next prime is 47145939913. The reversal of 47145939899 is 99893954174.

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 47145939899 - 2¹² = 47145935803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47145939859) 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, 691217 + ... + 756354.

It is an arithmetic number, because the mean of its divisors is an integer number (11786855010).

Almost surely, 2^47145939899 is an apocalyptic number.

47145939899 is a deficient number, since it is larger than the sum of its proper divisors (1480141).

47145939899 is a wasteful number, since it uses less digits than its factorization.

47145939899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480140.

The product of its digits is 88179840, while the sum is 68.

The spelling of 47145939899 in words is "forty-seven billion, one hundred forty-five million, nine hundred thirty-nine thousand, eight hundred ninety-nine".