10402040020321 has 8 divisors (see below), whose sum is σ = 10441700343360. Its totient is φ = 10362380522352.

The previous prime is 10402040020319. The next prime is 10402040020373. The reversal of 10402040020321 is 12302004020401.

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 10402040020321 - 2¹ = 10402040020319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402040020301) 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, 39821886 + ... + 40082248.

It is an arithmetic number, because the mean of its divisors is an integer number (1305212542920).

Almost surely, 2^{10402040020321} is an apocalyptic number.

It is an amenable number.

10402040020321 is a deficient number, since it is larger than the sum of its proper divisors (39660323039).

10402040020321 is a wasteful number, since it uses less digits than its factorization.

10402040020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412535.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10402040020321 its reverse (12302004020401), we get a palindrome (22704044040722).

The spelling of 10402040020321 in words is "ten trillion, four hundred two billion, forty million, twenty thousand, three hundred twenty-one".