475661067021 has 24 divisors (see below), whose sum is σ = 785548025600. Its totient is φ = 271692177696.

The previous prime is 475661067001. The next prime is 475661067029. The reversal of 475661067021 is 120760166574.

475661067021 is a `hidden beast` number, since 4 + 7 + 5 + 6 + 610 + 6 + 7 + 0 + 21 = 666.

It is not a de Polignac number, because 475661067021 - 2¹¹ = 475661064973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475661067029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1434046 + ... + 1734303.

Almost surely, 2^475661067021 is an apocalyptic number.

It is an amenable number.

475661067021 is a deficient number, since it is larger than the sum of its proper divisors (309886958579).

475661067021 is a wasteful number, since it uses less digits than its factorization.

475661067021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170745 (or 3170742 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 475661067021 in words is "four hundred seventy-five billion, six hundred sixty-one million, sixty-seven thousand, twenty-one".