474137983621 has 4 divisors (see below), whose sum is σ = 474139638252. Its totient is φ = 474136328992.

The previous prime is 474137983619. The next prime is 474137983633. The reversal of 474137983621 is 126389731474.

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

It can be written as a sum of positive squares in 2 ways, for example, as 293423722596 + 180714261025 = 541686^2 + 425105^2 .

It is a cyclic number.

It is not a de Polignac number, because 474137983621 - 2¹ = 474137983619 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 (474137983601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274240 + ... + 1011673.

It is an arithmetic number, because the mean of its divisors is an integer number (118534909563).

Almost surely, 2^474137983621 is an apocalyptic number.

It is an amenable number.

474137983621 is a deficient number, since it is larger than the sum of its proper divisors (1654631).

474137983621 is a wasteful number, since it uses less digits than its factorization.

474137983621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654630.

The product of its digits is 6096384, while the sum is 55.

The spelling of 474137983621 in words is "four hundred seventy-four billion, one hundred thirty-seven million, nine hundred eighty-three thousand, six hundred twenty-one".