645186286430 has 144 divisors (see below), whose sum is σ = 1427995254240. Its totient is φ = 209239583616.

The previous prime is 645186286403. The next prime is 645186286439. The reversal of 645186286430 is 34682681546.

645186286430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645186286439) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 131426816 + ... + 131431724.

It is an arithmetic number, because the mean of its divisors is an integer number (9916633710).

Almost surely, 2^645186286430 is an apocalyptic number.

645186286430 is an abundant number, since it is smaller than the sum of its proper divisors (782808967810).

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

645186286430 is a wasteful number, since it uses less digits than its factorization.

645186286430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711 (or 5685 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 645186286430 in words is "six hundred forty-five billion, one hundred eighty-six million, two hundred eighty-six thousand, four hundred thirty".