47951380018 has 8 divisors (see below), whose sum is σ = 71951804460. Its totient is φ = 23967445200.

The previous prime is 47951379923. The next prime is 47951380019. The reversal of 47951380018 is 81008315974.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47344102569 + 607277449 = 217587^2 + 24643^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 47951380018.

It is not an unprimeable number, because it can be changed into a prime (47951380019) 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, 4115133 + ... + 4126768.

Almost surely, 2^47951380018 is an apocalyptic number.

47951380018 is a deficient number, since it is larger than the sum of its proper divisors (24000424442).

47951380018 is a wasteful number, since it uses less digits than its factorization.

47951380018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8244812.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 47951380018 in words is "forty-seven billion, nine hundred fifty-one million, three hundred eighty thousand, eighteen".