47497345521 has 8 divisors (see below), whose sum is σ = 63683592480. Its totient is φ = 31487997792.

The previous prime is 47497345513. The next prime is 47497345523. The reversal of 47497345521 is 12554379474.

It is a happy number.

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

It is not a de Polignac number, because 47497345521 - 2³ = 47497345513 is a prime.

It is a super-2 number, since 2×47497345521² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47497345523) 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, 44224180 + ... + 44225253.

It is an arithmetic number, because the mean of its divisors is an integer number (7960449060).

Almost surely, 2^47497345521 is an apocalyptic number.

It is an amenable number.

47497345521 is a deficient number, since it is larger than the sum of its proper divisors (16186246959).

47497345521 is a wasteful number, since it uses less digits than its factorization.

47497345521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88449615.

The product of its digits is 4233600, while the sum is 51.

The spelling of 47497345521 in words is "forty-seven billion, four hundred ninety-seven million, three hundred forty-five thousand, five hundred twenty-one".