23722781964 has 24 divisors (see below), whose sum is σ = 63260752128. Its totient is φ = 6777937680.

The previous prime is 23722781963. The next prime is 23722782007. The reversal of 23722781964 is 46918722732.

It is a super-2 number, since 2×23722781964² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23722781963) 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 7 ways as a sum of consecutive naturals, for example, 141206952 + ... + 141207119.

It is an arithmetic number, because the mean of its divisors is an integer number (2635864672).

Almost surely, 2^23722781964 is an apocalyptic number.

It is an amenable number.

23722781964 is an abundant number, since it is smaller than the sum of its proper divisors (39537970164).

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

23722781964 is a wasteful number, since it uses less digits than its factorization.

23722781964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282414085 (or 282414083 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The spelling of 23722781964 in words is "twenty-three billion, seven hundred twenty-two million, seven hundred eighty-one thousand, nine hundred sixty-four".