23191877348640 has 5184 divisors, whose sum is σ = 115657259477760. Its totient is φ = 4345502515200.

The previous prime is 23191877348561. The next prime is 23191877348641. The reversal of 23191877348640 is 4684377819132.

23191877348640 is a `hidden beast` number, since 2 + 3 + 1 + 9 + 1 + 87 + 73 + 486 + 4 + 0 = 666.

It is a super-2 number, since 2×23191877348640² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23191877348641) by changing a digit.

It is a polite number, since it can be written in 863 ways as a sum of consecutive naturals, for example, 212769516906 + ... + 212769517014.

It is an arithmetic number, because the mean of its divisors is an integer number (22310428140).

Almost surely, 2^{23191877348640} is an apocalyptic number.

23191877348640 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 23191877348640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57828629738880).

23191877348640 is an abundant number, since it is smaller than the sum of its proper divisors (92465382129120).

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

23191877348640 is a wasteful number, since it uses less digits than its factorization.

23191877348640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 23191877348640 in words is "twenty-three trillion, one hundred ninety-one billion, eight hundred seventy-seven million, three hundred forty-eight thousand, six hundred forty".