645415002111 has 16 divisors (see below), whose sum is σ = 952797184128. Its totient is φ = 385322388000.

The previous prime is 645415002101. The next prime is 645415002187. The reversal of 645415002111 is 111200514546.

It is not a de Polignac number, because 645415002111 - 2⁶ = 645415002047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645415002101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145953240 + ... + 145957661.

It is an arithmetic number, because the mean of its divisors is an integer number (59549824008).

Almost surely, 2^645415002111 is an apocalyptic number.

645415002111 is a deficient number, since it is larger than the sum of its proper divisors (307382182017).

645415002111 is a wasteful number, since it uses less digits than its factorization.

645415002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291910982.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 645415002111 its reverse (111200514546), we get a palindrome (756615516657).

The spelling of 645415002111 in words is "six hundred forty-five billion, four hundred fifteen million, two thousand, one hundred eleven".