4723718640 has 80 divisors (see below), whose sum is σ = 14662231200. Its totient is φ = 1258049536.

The previous prime is 4723718557. The next prime is 4723718641. The reversal of 4723718640 is 468173274.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4723718592 and 4723718601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4723718641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181996 + ... + 206324.

It is an arithmetic number, because the mean of its divisors is an integer number (183277890).

Almost surely, 2^4723718640 is an apocalyptic number.

4723718640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4723718640 is an abundant number, since it is smaller than the sum of its proper divisors (9938512560).

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

4723718640 is a wasteful number, since it uses less digits than its factorization.

4723718640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25154 (or 25148 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 4723718640 is about 68729.3142698223. The cubic root of 4723718640 is about 1677.8817122904.

The spelling of 4723718640 in words is "four billion, seven hundred twenty-three million, seven hundred eighteen thousand, six hundred forty".