47137536521 has 2 divisors, whose sum is σ = 47137536522. Its totient is φ = 47137536520.

The previous prime is 47137536491. The next prime is 47137536527. The reversal of 47137536521 is 12563573174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46561008400 + 576528121 = 215780^2 + 24011^2 .

It is a cyclic number.

It is not a de Polignac number, because 47137536521 - 2¹⁴ = 47137520137 is a prime.

It is not a weakly prime, because it can be changed into another prime (47137536527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23568768260 + 23568768261.

It is an arithmetic number, because the mean of its divisors is an integer number (23568768261).

Almost surely, 2^47137536521 is an apocalyptic number.

It is an amenable number.

47137536521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47137536521 is an equidigital number, since it uses as much as digits as its factorization.

47137536521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 44.

It can be divided in two parts, 4713753 and 6521, that added together give a palindrome (4720274).

The spelling of 47137536521 in words is "forty-seven billion, one hundred thirty-seven million, five hundred thirty-six thousand, five hundred twenty-one".