23720115258540 has 144 divisors (see below), whose sum is σ = 74308054818816. Its totient is φ = 6118349904000.

The previous prime is 23720115258527. The next prime is 23720115258547. The reversal of 23720115258540 is 4585251102732.

23720115258540 is a `hidden beast` number, since 2 + 3 + 7 + 2 + 0 + 1 + 1 + 52 + 58 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (23720115258547) 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 47 ways as a sum of consecutive naturals, for example, 10481265 + ... + 12541815.

It is an arithmetic number, because the mean of its divisors is an integer number (516028158464).

Almost surely, 2^{23720115258540} is an apocalyptic number.

23720115258540 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 23720115258540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37154027409408).

23720115258540 is an abundant number, since it is smaller than the sum of its proper divisors (50587939560276).

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

23720115258540 is a wasteful number, since it uses less digits than its factorization.

23720115258540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062660 (or 2062655 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 23720115258540 in words is "twenty-three trillion, seven hundred twenty billion, one hundred fifteen million, two hundred fifty-eight thousand, five hundred forty".