23151455320 has 96 divisors (see below), whose sum is σ = 60700622400. Its totient is φ = 7923858432.

The previous prime is 23151455251. The next prime is 23151455329. The reversal of 23151455320 is 2355415132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151455329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1152321 + ... + 1172239.

It is an arithmetic number, because the mean of its divisors is an integer number (632298150).

Almost surely, 2^23151455320 is an apocalyptic number.

23151455320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23151455320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30350311200).

23151455320 is an abundant number, since it is smaller than the sum of its proper divisors (37549167080).

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

23151455320 is a wasteful number, since it uses less digits than its factorization.

23151455320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20537 (or 20526 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 23151455320 in words is "twenty-three billion, one hundred fifty-one million, four hundred fifty-five thousand, three hundred twenty".