64263630340 has 144 divisors (see below), whose sum is σ = 169216653312. Its totient is φ = 20319876864.

The previous prime is 64263630313. The next prime is 64263630349. The reversal of 64263630340 is 4303636246.

64263630340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64263630340.

It is not an unprimeable number, because it can be changed into a prime (64263630349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23223637 + ... + 23226403.

It is an arithmetic number, because the mean of its divisors is an integer number (1175115648).

Almost surely, 2^64263630340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64263630340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84608326656).

64263630340 is an abundant number, since it is smaller than the sum of its proper divisors (104953022972).

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

64263630340 is a wasteful number, since it uses less digits than its factorization.

64263630340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626 (or 4617 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 37.

The spelling of 64263630340 in words is "sixty-four billion, two hundred sixty-three million, six hundred thirty thousand, three hundred forty".