47447646651 has 24 divisors (see below), whose sum is σ = 68795977536. Its totient is φ = 31511733120.

The previous prime is 47447646641. The next prime is 47447646679. The reversal of 47447646651 is 15664674474.

47447646651 is a `hidden beast` number, since 4 + 74 + 476 + 46 + 65 + 1 = 666.

It is not a de Polignac number, because 47447646651 - 2⁷ = 47447646523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47447646641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3191806 + ... + 3206636.

It is an arithmetic number, because the mean of its divisors is an integer number (2866499064).

Almost surely, 2^47447646651 is an apocalyptic number.

47447646651 is a deficient number, since it is larger than the sum of its proper divisors (21348330885).

47447646651 is a wasteful number, since it uses less digits than its factorization.

47447646651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16163 (or 16160 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The spelling of 47447646651 in words is "forty-seven billion, four hundred forty-seven million, six hundred forty-six thousand, six hundred fifty-one".