23111360640 has 384 divisors, whose sum is σ = 83337508800. Its totient is φ = 6120271872.

The previous prime is 23111360639. The next prime is 23111360689. The reversal of 23111360640 is 4606311132.

23111360640 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 13 + 6 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26904531 + ... + 26905389.

Almost surely, 2^23111360640 is an apocalyptic number.

23111360640 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 23111360640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41668754400).

23111360640 is an abundant number, since it is smaller than the sum of its proper divisors (60226148160).

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

23111360640 is an equidigital number, since it uses as much as digits as its factorization.

23111360640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 23111360640 its reverse (4606311132), we get a palindrome (27717671772).

The spelling of 23111360640 in words is "twenty-three billion, one hundred eleven million, three hundred sixty thousand, six hundred forty".