1626321312401 has 8 divisors (see below), whose sum is σ = 1731501017064. Its totient is φ = 1522198690560.

The previous prime is 1626321312377. The next prime is 1626321312437. The reversal of 1626321312401 is 1042131236261.

It can be written as a sum of positive squares in 4 ways, for example, as 13357811776 + 1612963500625 = 115576^2 + 1270025^2 .

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 1626321312401 - 2³⁸ = 1351443405457 is a prime.

It is a super-2 number, since 2×1626321312401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1626321912401) 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, 264267530 + ... + 264273683.

It is an arithmetic number, because the mean of its divisors is an integer number (216437627133).

Almost surely, 2^{1626321312401} is an apocalyptic number.

It is an amenable number.

1626321312401 is a deficient number, since it is larger than the sum of its proper divisors (105179704663).

1626321312401 is a wasteful number, since it uses less digits than its factorization.

1626321312401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528541411.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 1626321312401 its reverse (1042131236261), we get a palindrome (2668452548662).

The spelling of 1626321312401 in words is "one trillion, six hundred twenty-six billion, three hundred twenty-one million, three hundred twelve thousand, four hundred one".