47247977956 has 27 divisors (see below), whose sum is σ = 83206854633. Its totient is φ = 23475528000.

The previous prime is 47247977911. The next prime is 47247977963. The reversal of 47247977956 is 65977974274.

The square root of 47247977956 is 217366.

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

It can be written as a sum of positive squares in only one way, i.e., 5298384100 + 41949593856 = 72790^2 + 204816^2 .

It is a Duffinian number.

Its product of digits (186701760) is a multiple of the sum of its prime divisors (686).

It is a junction number, because it is equal to n+sod(n) for n = 47247977891 and 47247977900.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 109117516 + ... + 109117948.

Almost surely, 2^47247977956 is an apocalyptic number.

47247977956 is the 217366-th square number.

It is an amenable number.

47247977956 is a deficient number, since it is larger than the sum of its proper divisors (35958876677).

47247977956 is an frugal number, since it uses more digits than its factorization.

47247977956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 686 counting only the distinct ones).

The product of its digits is 186701760, while the sum is 67.

The spelling of 47247977956 in words is "forty-seven billion, two hundred forty-seven million, nine hundred seventy-seven thousand, nine hundred fifty-six".