47857687696 has 135 divisors (see below), whose sum is σ = 116992979883. Its totient is φ = 18901209600.

The previous prime is 47857687693. The next prime is 47857687723. The reversal of 47857687696 is 69678675874.

The square root of 47857687696 is 218764.

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 12250000 + 47845437696 = 3500^2 + 218736^2 .

It is not an unprimeable number, because it can be changed into a prime (47857687693) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 79629796 + ... + 79630396.

Almost surely, 2^47857687696 is an apocalyptic number.

47857687696 is the 218764-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47857687696

47857687696 is an abundant number, since it is smaller than the sum of its proper divisors (69135292187).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47857687696 is an equidigital number, since it uses as much as digits as its factorization.

47857687696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 623 counting only the distinct ones).

The product of its digits is 853493760, while the sum is 73.

The spelling of 47857687696 in words is "forty-seven billion, eight hundred fifty-seven million, six hundred eighty-seven thousand, six hundred ninety-six".