23132336640 has 160 divisors (see below), whose sum is σ = 84515840640. Its totient is φ = 5287378944.

The previous prime is 23132336639. The next prime is 23132336671. The reversal of 23132336640 is 4663323132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161385 + ... + 268904.

It is an arithmetic number, because the mean of its divisors is an integer number (528224004).

Almost surely, 2^23132336640 is an apocalyptic number.

23132336640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23132336640 is an abundant number, since it is smaller than the sum of its proper divisors (61383504000).

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

23132336640 is an equidigital number, since it uses as much as digits as its factorization.

23132336640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430322 (or 430306 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 33.

Adding to 23132336640 its reverse (4663323132), we get a palindrome (27795659772).

The spelling of 23132336640 in words is "twenty-three billion, one hundred thirty-two million, three hundred thirty-six thousand, six hundred forty".