23740745980 has 72 divisors (see below), whose sum is σ = 58031766576. Its totient is φ = 8134560000.

The previous prime is 23740745957. The next prime is 23740745989. The reversal of 23740745980 is 8954704732.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23740745989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1758255 + ... + 1771705.

It is an arithmetic number, because the mean of its divisors is an integer number (805996758).

Almost surely, 2^23740745980 is an apocalyptic number.

23740745980 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 23740745980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29015883288).

23740745980 is an abundant number, since it is smaller than the sum of its proper divisors (34291020596).

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

23740745980 is a wasteful number, since it uses less digits than its factorization.

23740745980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15275 (or 15266 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 23740745980 in words is "twenty-three billion, seven hundred forty million, seven hundred forty-five thousand, nine hundred eighty".