47211820057 has 4 divisors (see below), whose sum is σ = 47212965220. Its totient is φ = 47210674896.

The previous prime is 47211820039. The next prime is 47211820091. The reversal of 47211820057 is 75002811274.

47211820057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33585693696 + 13626126361 = 183264^2 + 116731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47211820057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47211819998 and 47211820025.

It is not an unprimeable number, because it can be changed into a prime (47211829057) 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, 508338 + ... + 593995.

It is an arithmetic number, because the mean of its divisors is an integer number (11803241305).

Almost surely, 2^47211820057 is an apocalyptic number.

It is an amenable number.

47211820057 is a deficient number, since it is larger than the sum of its proper divisors (1145163).

47211820057 is a wasteful number, since it uses less digits than its factorization.

47211820057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145162.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 47211820057 in words is "forty-seven billion, two hundred eleven million, eight hundred twenty thousand, fifty-seven".