201601499990 has 16 divisors (see below), whose sum is σ = 395872036560. Its totient is φ = 73309636320.

The previous prime is 201601499987. The next prime is 201601500017. The reversal of 201601499990 is 99994106102.

201601499990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916370345 + ... + 916370564.

It is an arithmetic number, because the mean of its divisors is an integer number (24742002285).

Almost surely, 2^201601499990 is an apocalyptic number.

201601499990 is a deficient number, since it is larger than the sum of its proper divisors (194270536570).

201601499990 is a wasteful number, since it uses less digits than its factorization.

201601499990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832740927.

The product of its (nonzero) digits is 314928, while the sum is 50.

The spelling of 201601499990 in words is "two hundred one billion, six hundred one million, four hundred ninety-nine thousand, nine hundred ninety".