47213551478537 has 2 divisors, whose sum is σ = 47213551478538. Its totient is φ = 47213551478536.

The previous prime is 47213551478521. The next prime is 47213551478707. The reversal of 47213551478537 is 73587415531274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30830356195081 + 16383195283456 = 5552509^2 + 4047616^2 .

It is a cyclic number.

It is not a de Polignac number, because 47213551478537 - 2⁴ = 47213551478521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47213551478537.

It is not a weakly prime, because it can be changed into another prime (47213571478537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23606775739268 + 23606775739269.

It is an arithmetic number, because the mean of its divisors is an integer number (23606775739269).

Almost surely, 2^{47213551478537} is an apocalyptic number.

It is an amenable number.

47213551478537 is a deficient number, since it is larger than the sum of its proper divisors (1).

47213551478537 is an equidigital number, since it uses as much as digits as its factorization.

47213551478537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784000, while the sum is 62.

The spelling of 47213551478537 in words is "forty-seven trillion, two hundred thirteen billion, five hundred fifty-one million, four hundred seventy-eight thousand, five hundred thirty-seven".