402032304550021 has 8 divisors (see below), whose sum is σ = 408260865524960. Its totient is φ = 395810451775728.

The previous prime is 402032304550013. The next prime is 402032304550057. The reversal of 402032304550021 is 120055403230204.

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

It is a cyclic number.

It is not a de Polignac number, because 402032304550021 - 2³ = 402032304550013 is a prime.

It is a super-2 number, since 2×402032304550021² (a number of 30 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 (402032304551021) 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, 1676929371 + ... + 1677169096.

It is an arithmetic number, because the mean of its divisors is an integer number (51032608190620).

Almost surely, 2^{402032304550021} is an apocalyptic number.

It is an amenable number.

402032304550021 is a deficient number, since it is larger than the sum of its proper divisors (6228560974939).

402032304550021 is a wasteful number, since it uses less digits than its factorization.

402032304550021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354100323.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 402032304550021 its reverse (120055403230204), we get a palindrome (522087707780225).

The spelling of 402032304550021 in words is "four hundred two trillion, thirty-two billion, three hundred four million, five hundred fifty thousand, twenty-one".