47235699521 has 8 divisors (see below), whose sum is σ = 47893092744. Its totient is φ = 46578585600.

The previous prime is 47235699509. The next prime is 47235699523. The reversal of 47235699521 is 12599653274.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10027218496 + 37208481025 = 100136^2 + 192895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47235699521 - 2¹⁸ = 47235437377 is a prime.

It is a super-3 number, since 3×47235699521³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47235699523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283085 + ... + 417861.

It is an arithmetic number, because the mean of its divisors is an integer number (5986636593).

Almost surely, 2^47235699521 is an apocalyptic number.

It is an amenable number.

47235699521 is a deficient number, since it is larger than the sum of its proper divisors (657393223).

47235699521 is a wasteful number, since it uses less digits than its factorization.

47235699521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139651.

The product of its digits is 4082400, while the sum is 53.

The spelling of 47235699521 in words is "forty-seven billion, two hundred thirty-five million, six hundred ninety-nine thousand, five hundred twenty-one".