47235699509 has 2 divisors, whose sum is σ = 47235699510. Its totient is φ = 47235699508.

The previous prime is 47235699481. The next prime is 47235699523. The reversal of 47235699509 is 90599653274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40450058884 + 6785640625 = 201122^2 + 82375^2 .

It is a cyclic number.

It is not a de Polignac number, because 47235699509 - 2²⁰ = 47234650933 is a prime.

It is a super-2 number, since 2×47235699509² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47235699559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23617849754 + 23617849755.

It is an arithmetic number, because the mean of its divisors is an integer number (23617849755).

Almost surely, 2^47235699509 is an apocalyptic number.

It is an amenable number.

47235699509 is a deficient number, since it is larger than the sum of its proper divisors (1).

47235699509 is an equidigital number, since it uses as much as digits as its factorization.

47235699509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18370800, while the sum is 59.

The spelling of 47235699509 in words is "forty-seven billion, two hundred thirty-five million, six hundred ninety-nine thousand, five hundred nine".