645455022116 has 12 divisors (see below), whose sum is σ = 1129774837632. Its totient is φ = 322662211368.

The previous prime is 645455022103. The next prime is 645455022167. The reversal of 645455022116 is 611220554546.

It is a super-2 number, since 2×645455022116² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16302680 + ... + 16342223.

It is an arithmetic number, because the mean of its divisors is an integer number (94147903136).

Almost surely, 2^645455022116 is an apocalyptic number.

It is an amenable number.

645455022116 is a deficient number, since it is larger than the sum of its proper divisors (484319815516).

645455022116 is a wasteful number, since it uses less digits than its factorization.

645455022116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32649850 (or 32649848 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 645455022116 in words is "six hundred forty-five billion, four hundred fifty-five million, twenty-two thousand, one hundred sixteen".