47868626521 has 9 divisors (see below), whose sum is σ = 48250796349. Its totient is φ = 47489465184.

The previous prime is 47868626489. The next prime is 47868626551. The reversal of 47868626521 is 12562686874.

The square root of 47868626521 is 218789.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2559246921 + 45309379600 = 50589^2 + 212860^2 .

It is not a de Polignac number, because 47868626521 - 2⁵ = 47868626489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47868626551) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29973295 + ... + 29974891.

Almost surely, 2^47868626521 is an apocalyptic number.

47868626521 is the 218789-th square number.

47868626521 is the 109395-th centered octagonal number.

It is an amenable number.

47868626521 is a deficient number, since it is larger than the sum of its proper divisors (382169828).

47868626521 is an frugal number, since it uses more digits than its factorization.

47868626521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468 (or 1734 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The spelling of 47868626521 in words is "forty-seven billion, eight hundred sixty-eight million, six hundred twenty-six thousand, five hundred twenty-one".