326435556460 has 72 divisors (see below), whose sum is σ = 743546714400. Its totient is φ = 120328086528.

The previous prime is 326435556439. The next prime is 326435556493. The reversal of 326435556460 is 64655534623.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1944004 + ... + 2105236.

It is an arithmetic number, because the mean of its divisors is an integer number (10327037700).

Almost surely, 2^326435556460 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 326435556460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371773357200).

326435556460 is an abundant number, since it is smaller than the sum of its proper divisors (417111157940).

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

326435556460 is a wasteful number, since it uses less digits than its factorization.

326435556460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161867 (or 161852 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 326435556460 in words is "three hundred twenty-six billion, four hundred thirty-five million, five hundred fifty-six thousand, four hundred sixty".