645235322510 has 16 divisors (see below), whose sum is σ = 1163008073376. Its totient is φ = 257742019488.

The previous prime is 645235322509. The next prime is 645235322519. The reversal of 645235322510 is 15223532546.

645235322510 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645235322519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44005994 + ... + 44020653.

It is an arithmetic number, because the mean of its divisors is an integer number (72688004586).

Almost surely, 2^645235322510 is an apocalyptic number.

645235322510 is a deficient number, since it is larger than the sum of its proper divisors (517772750866).

645235322510 is a wasteful number, since it uses less digits than its factorization.

645235322510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88027387.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 645235322510 in words is "six hundred forty-five billion, two hundred thirty-five million, three hundred twenty-two thousand, five hundred ten".