47643057987 has 16 divisors (see below), whose sum is σ = 72701364480. Its totient is φ = 27186197472.

The previous prime is 47643057971. The next prime is 47643057989. The reversal of 47643057987 is 78975034674.

It is not a de Polignac number, because 47643057987 - 2⁴ = 47643057971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47643057987.

It is not an unprimeable number, because it can be changed into a prime (47643057989) 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, 1585053 + ... + 1614830.

It is an arithmetic number, because the mean of its divisors is an integer number (4543835280).

Almost surely, 2^47643057987 is an apocalyptic number.

47643057987 is a deficient number, since it is larger than the sum of its proper divisors (25058306493).

47643057987 is a wasteful number, since it uses less digits than its factorization.

47643057987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200602.

The product of its (nonzero) digits is 35562240, while the sum is 60.

The spelling of 47643057987 in words is "forty-seven billion, six hundred forty-three million, fifty-seven thousand, nine hundred eighty-seven".