53147047309 has 2 divisors, whose sum is σ = 53147047310. Its totient is φ = 53147047308.

The previous prime is 53147047307. The next prime is 53147047313. The reversal of 53147047309 is 90374074135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39679444809 + 13467602500 = 199197^2 + 116050^2 .

It is a cyclic number.

It is not a de Polignac number, because 53147047309 - 2¹ = 53147047307 is a prime.

Together with 53147047307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53147047307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26573523654 + 26573523655.

It is an arithmetic number, because the mean of its divisors is an integer number (26573523655).

Almost surely, 2^53147047309 is an apocalyptic number.

It is an amenable number.

53147047309 is a deficient number, since it is larger than the sum of its proper divisors (1).

53147047309 is an equidigital number, since it uses as much as digits as its factorization.

53147047309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 53147047309 in words is "fifty-three billion, one hundred forty-seven million, forty-seven thousand, three hundred nine".