47047474757 has 2 divisors, whose sum is σ = 47047474758. Its totient is φ = 47047474756.

The previous prime is 47047474723. The next prime is 47047474807. The reversal of 47047474757 is 75747474074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26078697121 + 20968777636 = 161489^2 + 144806^2 .

It is a cyclic number.

It is not a de Polignac number, because 47047474757 - 2²⁴ = 47030697541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47047474157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23523737378 + 23523737379.

It is an arithmetic number, because the mean of its divisors is an integer number (23523737379).

Almost surely, 2^47047474757 is an apocalyptic number.

It is an amenable number.

47047474757 is a deficient number, since it is larger than the sum of its proper divisors (1).

47047474757 is an equidigital number, since it uses as much as digits as its factorization.

47047474757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21512960, while the sum is 56.

The spelling of 47047474757 in words is "forty-seven billion, forty-seven million, four hundred seventy-four thousand, seven hundred fifty-seven".