645065420362 has 32 divisors (see below), whose sum is σ = 1111208978880. Its totient is φ = 277756490880.

The previous prime is 645065420317. The next prime is 645065420383. The reversal of 645065420362 is 263024560546.

It is a super-2 number, since 2×645065420362² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5626798 + ... + 5740294.

It is an arithmetic number, because the mean of its divisors is an integer number (34725280590).

Almost surely, 2^645065420362 is an apocalyptic number.

645065420362 is a deficient number, since it is larger than the sum of its proper divisors (466143558518).

645065420362 is a wasteful number, since it uses less digits than its factorization.

645065420362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127126.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 645065420362 in words is "six hundred forty-five billion, sixty-five million, four hundred twenty thousand, three hundred sixty-two".