201623707904 has 72 divisors (see below), whose sum is σ = 426307432320. Its totient is φ = 94843117568.

The previous prime is 201623707897. The next prime is 201623707931. The reversal of 201623707904 is 409707326102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12625877 + ... + 12641835.

It is an arithmetic number, because the mean of its divisors is an integer number (5920936560).

Almost surely, 2^201623707904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201623707904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213153716160).

201623707904 is an abundant number, since it is smaller than the sum of its proper divisors (224683724416).

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

201623707904 is a wasteful number, since it uses less digits than its factorization.

201623707904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18895 (or 18881 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 201623707904 in words is "two hundred one billion, six hundred twenty-three million, seven hundred seven thousand, nine hundred four".