23036394780 has 72 divisors (see below), whose sum is σ = 79859506272. Its totient is φ = 5265461376.

The previous prime is 23036394761. The next prime is 23036394781. The reversal of 23036394780 is 8749363032.

23036394780 is a `hidden beast` number, since 2 + 3 + 0 + 3 + 639 + 4 + 7 + 8 + 0 = 666.

It is a super-2 number, since 2×23036394780² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23036394781) 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 23 ways as a sum of consecutive naturals, for example, 9140167 + ... + 9142686.

Almost surely, 2^23036394780 is an apocalyptic number.

23036394780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23036394780 is an abundant number, since it is smaller than the sum of its proper divisors (56823111492).

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

23036394780 is a wasteful number, since it uses less digits than its factorization.

23036394780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18282875 (or 18282870 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 23036394780 in words is "twenty-three billion, thirty-six million, three hundred ninety-four thousand, seven hundred eighty".