201583721146 has 16 divisors (see below), whose sum is σ = 319798582560. Its totient is φ = 95034476880.

The previous prime is 201583721093. The next prime is 201583721243. The reversal of 201583721146 is 641127385102.

It is a junction number, because it is equal to n+sod(n) for n = 201583721099 and 201583721108.

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, 12562681 + ... + 12578716.

It is an arithmetic number, because the mean of its divisors is an integer number (19987411410).

Almost surely, 2^201583721146 is an apocalyptic number.

201583721146 is a deficient number, since it is larger than the sum of its proper divisors (118214861414).

201583721146 is a wasteful number, since it uses less digits than its factorization.

201583721146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25141629.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 201583721146 in words is "two hundred one billion, five hundred eighty-three million, seven hundred twenty-one thousand, one hundred forty-six".