33444643164 has 48 divisors (see below), whose sum is σ = 80904096000. Its totient is φ = 10745253760.

The previous prime is 33444643147. The next prime is 33444643187. The reversal of 33444643164 is 46134644433.

It is a super-2 number, since 2×33444643164² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 368664 + ... + 450335.

It is an arithmetic number, because the mean of its divisors is an integer number (1685502000).

Almost surely, 2^33444643164 is an apocalyptic number.

It is an amenable number.

33444643164 is an abundant number, since it is smaller than the sum of its proper divisors (47459452836).

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

33444643164 is a wasteful number, since it uses less digits than its factorization.

33444643164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819130 (or 819128 counting only the distinct ones).

The product of its digits is 995328, while the sum is 42.

The spelling of 33444643164 in words is "thirty-three billion, four hundred forty-four million, six hundred forty-three thousand, one hundred sixty-four".