321142400553451 has 8 divisors (see below), whose sum is σ = 322895589981264. Its totient is φ = 319392180119040.

The previous prime is 321142400553439. The next prime is 321142400553467. The reversal of 321142400553451 is 154355004241123.

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 321142400553451 - 2²³ = 321142392164843 is a prime.

It is a super-2 number, since 2×321142400553451² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321142400553251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742031430 + ... + 742464091.

It is an arithmetic number, because the mean of its divisors is an integer number (40361948747658).

Almost surely, 2^{321142400553451} is an apocalyptic number.

321142400553451 is a deficient number, since it is larger than the sum of its proper divisors (1753189427813).

321142400553451 is a wasteful number, since it uses less digits than its factorization.

321142400553451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484496701.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 321142400553451 its reverse (154355004241123), we get a palindrome (475497404794574).

The spelling of 321142400553451 in words is "three hundred twenty-one trillion, one hundred forty-two billion, four hundred million, five hundred fifty-three thousand, four hundred fifty-one".