23305491072 has 160 divisors (see below), whose sum is σ = 69890277600. Its totient is φ = 7708746240.

The previous prime is 23305491071. The next prime is 23305491107. The reversal of 23305491072 is 27019450332.

23305491072 is a `hidden beast` number, since 2 + 3 + 3 + 0 + 549 + 107 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23305491071) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1349629 + ... + 1366787.

It is an arithmetic number, because the mean of its divisors is an integer number (436814235).

Almost surely, 2^23305491072 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 23305491072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34945138800).

23305491072 is an abundant number, since it is smaller than the sum of its proper divisors (46584786528).

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

23305491072 is a wasteful number, since it uses less digits than its factorization.

23305491072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17316 (or 17295 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 23305491072 in words is "twenty-three billion, three hundred five million, four hundred ninety-one thousand, seventy-two".