23440719780 has 72 divisors (see below), whose sum is σ = 71117100600. Its totient is φ = 6249664512.

The previous prime is 23440719727. The next prime is 23440719803. The reversal of 23440719780 is 8791704432.

23440719780 is a `hidden beast` number, since 234 + 407 + 1 + 9 + 7 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3417337764 + 20023382016 = 58458^2 + 141504^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1339326 + ... + 1356714.

Almost surely, 2^23440719780 is an apocalyptic number.

23440719780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23440719780 is an abundant number, since it is smaller than the sum of its proper divisors (47676380820).

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

23440719780 is a wasteful number, since it uses less digits than its factorization.

23440719780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24893 (or 24888 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 23440719780 in words is "twenty-three billion, four hundred forty million, seven hundred nineteen thousand, seven hundred eighty".