373839211821 has 8 divisors (see below), whose sum is σ = 503590966144. Its totient is φ = 246656799360.

The previous prime is 373839211769. The next prime is 373839211847. The reversal of 373839211821 is 128112938373.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 373839211821 - 2¹⁹ = 373838687533 is a prime.

It is a super-2 number, since 2×373839211821² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373839219821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642335125 + ... + 642335706.

It is an arithmetic number, because the mean of its divisors is an integer number (62948870768).

Almost surely, 2^373839211821 is an apocalyptic number.

It is an amenable number.

373839211821 is a deficient number, since it is larger than the sum of its proper divisors (129751754323).

373839211821 is a wasteful number, since it uses less digits than its factorization.

373839211821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284670931.

The product of its digits is 435456, while the sum is 48.

The spelling of 373839211821 in words is "three hundred seventy-three billion, eight hundred thirty-nine million, two hundred eleven thousand, eight hundred twenty-one".