645065143262 has 16 divisors (see below), whose sum is σ = 978720077520. Its totient is φ = 318826972992.

The previous prime is 645065143249. The next prime is 645065143337. The reversal of 645065143262 is 262341560546.

It is a happy number.

It is a super-2 number, since 2×645065143262² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236408 + ... + 1160180.

It is an arithmetic number, because the mean of its divisors is an integer number (61170004845).

Almost surely, 2^645065143262 is an apocalyptic number.

645065143262 is a deficient number, since it is larger than the sum of its proper divisors (333654934258).

645065143262 is a wasteful number, since it uses less digits than its factorization.

645065143262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927787.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 645065143262 in words is "six hundred forty-five billion, sixty-five million, one hundred forty-three thousand, two hundred sixty-two".