326423213136020 has 288 divisors, whose sum is σ = 925536104752896. Its totient is φ = 93905558323200.

The previous prime is 326423213136019. The next prime is 326423213136079. The reversal of 326423213136020 is 20631312324623.

It is a super-2 number, since 2×326423213136020² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2523676550 + ... + 2523805890.

It is an arithmetic number, because the mean of its divisors is an integer number (3213667030392).

Almost surely, 2^{326423213136020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326423213136020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462768052376448).

326423213136020 is an abundant number, since it is smaller than the sum of its proper divisors (599112891616876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

326423213136020 is a wasteful number, since it uses less digits than its factorization.

326423213136020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139091 (or 139076 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 326423213136020 in words is "three hundred twenty-six trillion, four hundred twenty-three billion, two hundred thirteen million, one hundred thirty-six thousand, twenty".