16474166232421 has 4 divisors (see below), whose sum is σ = 16475660227872. Its totient is φ = 16472672236972.

The previous prime is 16474166232397. The next prime is 16474166232431. The reversal of 16474166232421 is 12423266147461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16474166232421 - 2⁵ = 16474166232389 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 (16474166232431) 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, 746981185 + ... + 747003238.

It is an arithmetic number, because the mean of its divisors is an integer number (4118915056968).

Almost surely, 2^{16474166232421} is an apocalyptic number.

It is an amenable number.

16474166232421 is a deficient number, since it is larger than the sum of its proper divisors (1493995451).

16474166232421 is a wasteful number, since it uses less digits than its factorization.

16474166232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493995450.

The product of its digits is 2322432, while the sum is 49.

The spelling of 16474166232421 in words is "sixteen trillion, four hundred seventy-four billion, one hundred sixty-six million, two hundred thirty-two thousand, four hundred twenty-one".