645414414546 has 48 divisors (see below), whose sum is σ = 1428241477824. Its totient is φ = 194284860000.

The previous prime is 645414414511. The next prime is 645414414563.

645414414546 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×645414414546² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645414414495 and 645414414504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2834085 + ... + 3053336.

It is an arithmetic number, because the mean of its divisors is an integer number (29755030788).

Almost surely, 2^645414414546 is an apocalyptic number.

645414414546 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

645414414546 is an abundant number, since it is smaller than the sum of its proper divisors (782827063278).

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

645414414546 is a wasteful number, since it uses less digits than its factorization.

645414414546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5887599 (or 5887588 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 48.

The spelling of 645414414546 in words is "six hundred forty-five billion, four hundred fourteen million, four hundred fourteen thousand, five hundred forty-six".