64435123216212 has 48 divisors (see below), whose sum is σ = 172028433881472. Its totient is φ = 18388452493440.

The previous prime is 64435123216201. The next prime is 64435123216267. The reversal of 64435123216212 is 21261232153446.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 449567739 + ... + 449711042.

It is an arithmetic number, because the mean of its divisors is an integer number (3583925705864).

Almost surely, 2^{64435123216212} is an apocalyptic number.

It is an amenable number.

64435123216212 is an abundant number, since it is smaller than the sum of its proper divisors (107593310665260).

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

64435123216212 is a wasteful number, since it uses less digits than its factorization.

64435123216212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899279648 (or 899279646 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

Adding to 64435123216212 its reverse (21261232153446), we get a palindrome (85696355369658).

The spelling of 64435123216212 in words is "sixty-four trillion, four hundred thirty-five billion, one hundred twenty-three million, two hundred sixteen thousand, two hundred twelve".