2051047647 has 36 divisors (see below), whose sum is σ = 3278266992. Its totient is φ = 1234728000.

The previous prime is 2051047643. The next prime is 2051047657. The reversal of 2051047647 is 7467401502.

2051047647 is a `hidden beast` number, since 2 + 0 + 5 + 1 + 0 + 4 + 7 + 647 = 666.

It is not a de Polignac number, because 2051047647 - 2² = 2051047643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051047643) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158203 + ... + 170675.

It is an arithmetic number, because the mean of its divisors is an integer number (91062972).

Almost surely, 2^2051047647 is an apocalyptic number.

2051047647 is a deficient number, since it is larger than the sum of its proper divisors (1227219345).

2051047647 is a wasteful number, since it uses less digits than its factorization.

2051047647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12652 (or 12638 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 2051047647 is about 45288.4935386462. The cubic root of 2051047647 is about 1270.5504561960.

The spelling of 2051047647 in words is "two billion, fifty-one million, forty-seven thousand, six hundred forty-seven".