47891876537 has 2 divisors, whose sum is σ = 47891876538. Its totient is φ = 47891876536.

The previous prime is 47891876521. The next prime is 47891876561. The reversal of 47891876537 is 73567819874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47644412176 + 247464361 = 218276^2 + 15731^2 .

It is a cyclic number.

It is not a de Polignac number, because 47891876537 - 2⁴ = 47891876521 is a prime.

It is a super-2 number, since 2×47891876537² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47891876237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23945938268 + 23945938269.

It is an arithmetic number, because the mean of its divisors is an integer number (23945938269).

Almost surely, 2^47891876537 is an apocalyptic number.

It is an amenable number.

47891876537 is a deficient number, since it is larger than the sum of its proper divisors (1).

47891876537 is an equidigital number, since it uses as much as digits as its factorization.

47891876537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 65.

The spelling of 47891876537 in words is "forty-seven billion, eight hundred ninety-one million, eight hundred seventy-six thousand, five hundred thirty-seven".