640432030883 has 2 divisors, whose sum is σ = 640432030884. Its totient is φ = 640432030882.

The previous prime is 640432030813. The next prime is 640432030939. The reversal of 640432030883 is 388030234046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 640432030883 - 2¹⁰ = 640432029859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 640432030883.

It is not a weakly prime, because it can be changed into another prime (640432030813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320216015441 + 320216015442.

It is an arithmetic number, because the mean of its divisors is an integer number (320216015442).

Almost surely, 2^640432030883 is an apocalyptic number.

640432030883 is a deficient number, since it is larger than the sum of its proper divisors (1).

640432030883 is an equidigital number, since it uses as much as digits as its factorization.

640432030883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 640432030883 in words is "six hundred forty billion, four hundred thirty-two million, thirty thousand, eight hundred eighty-three".