47421163646 has 4 divisors (see below), whose sum is σ = 71131745472. Its totient is φ = 23710581822.

The previous prime is 47421163639. The next prime is 47421163679. The reversal of 47421163646 is 64636112474.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 47421163597 and 47421163606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11855290910 + ... + 11855290913.

It is an arithmetic number, because the mean of its divisors is an integer number (17782936368).

Almost surely, 2^47421163646 is an apocalyptic number.

47421163646 is a deficient number, since it is larger than the sum of its proper divisors (23710581826).

47421163646 is a wasteful number, since it uses less digits than its factorization.

47421163646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23710581825.

The product of its digits is 580608, while the sum is 44.

The spelling of 47421163646 in words is "forty-seven billion, four hundred twenty-one million, one hundred sixty-three thousand, six hundred forty-six".