645606506230 has 64 divisors (see below), whose sum is σ = 1383524904960. Its totient is φ = 212245142400.

The previous prime is 645606506227. The next prime is 645606506297. The reversal of 645606506230 is 32605606546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1128216 + ... + 1601275.

It is an arithmetic number, because the mean of its divisors is an integer number (21617576640).

Almost surely, 2^645606506230 is an apocalyptic number.

645606506230 is an abundant number, since it is smaller than the sum of its proper divisors (737918398730).

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

645606506230 is a wasteful number, since it uses less digits than its factorization.

645606506230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729645.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 645606506230 in words is "six hundred forty-five billion, six hundred six million, five hundred six thousand, two hundred thirty".