201023199984 has 40 divisors (see below), whose sum is σ = 521284528512. Its totient is φ = 66752946880.

The previous prime is 201023199973. The next prime is 201023199991. The reversal of 201023199984 is 489991320102.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7949322 + ... + 7974569.

Almost surely, 2^201023199984 is an apocalyptic number.

201023199984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201023199984 is an abundant number, since it is smaller than the sum of its proper divisors (320261328528).

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

201023199984 is a wasteful number, since it uses less digits than its factorization.

201023199984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15924165 (or 15924159 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 201023199984 in words is "two hundred one billion, twenty-three million, one hundred ninety-nine thousand, nine hundred eighty-four".