473328100921 has 4 divisors (see below), whose sum is σ = 509737954852. Its totient is φ = 436918246992.

The previous prime is 473328100901. The next prime is 473328100969. The reversal of 473328100921 is 129001823374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 129001823374 = 2 ⋅64500911687.

It can be written as a sum of positive squares in 2 ways, for example, as 90835329321 + 382492771600 = 301389^2 + 618460^2 .

It is a cyclic number.

It is not a de Polignac number, because 473328100921 - 2¹⁹ = 473327576633 is a prime.

It is a super-2 number, since 2×473328100921² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (473328100901) 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, 18204926946 + ... + 18204926971.

It is an arithmetic number, because the mean of its divisors is an integer number (127434488713).

Almost surely, 2^473328100921 is an apocalyptic number.

It is an amenable number.

473328100921 is a deficient number, since it is larger than the sum of its proper divisors (36409853931).

473328100921 is a wasteful number, since it uses less digits than its factorization.

473328100921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36409853930.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 473328100921 in words is "four hundred seventy-three billion, three hundred twenty-eight million, one hundred thousand, nine hundred twenty-one".