23691780504 has 512 divisors, whose sum is σ = 84049920000. Its totient is φ = 6029821440.

The previous prime is 23691780503. The next prime is 23691780517. The reversal of 23691780504 is 40508719632.

23691780504 is a `hidden beast` number, since 2 + 3 + 69 + 1 + 7 + 80 + 504 = 666.

It is a super-2 number, since 2×23691780504² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23691780504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23691780503) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 32950657 + ... + 32951375.

It is an arithmetic number, because the mean of its divisors is an integer number (164160000).

It is a 1-persistent number, because it is pandigital, but 2⋅23691780504 = 47383561008 is not.

Almost surely, 2^23691780504 is an apocalyptic number.

23691780504 is a gapful number since it is divisible by the number (24) 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 23691780504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42024960000).

23691780504 is an abundant number, since it is smaller than the sum of its proper divisors (60358139496).

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

23691780504 is a wasteful number, since it uses less digits than its factorization.

23691780504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 23691780504 in words is "twenty-three billion, six hundred ninety-one million, seven hundred eighty thousand, five hundred four".