164211433133550 has 96 divisors (see below), whose sum is σ = 444271968167040. Its totient is φ = 39808348406400.

The previous prime is 164211433133533. The next prime is 164211433133563. The reversal of 164211433133550 is 55331334112461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145941409 + ... + 147062291.

It is an arithmetic number, because the mean of its divisors is an integer number (4627833001740).

Almost surely, 2^{164211433133550} is an apocalyptic number.

164211433133550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164211433133550 is an abundant number, since it is smaller than the sum of its proper divisors (280060535033490).

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

164211433133550 is a wasteful number, since it uses less digits than its factorization.

164211433133550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209698 (or 1209693 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 164211433133550 in words is "one hundred sixty-four trillion, two hundred eleven billion, four hundred thirty-three million, one hundred thirty-three thousand, five hundred fifty".