201040091604 has 72 divisors (see below), whose sum is σ = 578486930112. Its totient is φ = 58272487680.

The previous prime is 201040091591. The next prime is 201040091617. The reversal of 201040091604 is 406190040102.

201040091604 is a `hidden beast` number, since 2 + 0 + 10 + 40 + 0 + 9 + 1 + 604 = 666.

It is an interprime number because it is at equal distance from previous prime (201040091591) and next prime (201040091617).

It is a super-2 number, since 2×201040091604² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11027349 + ... + 11045564.

It is an arithmetic number, because the mean of its divisors is an integer number (8034540696).

Almost surely, 2^201040091604 is an apocalyptic number.

It is an amenable number.

201040091604 is an abundant number, since it is smaller than the sum of its proper divisors (377446838508).

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

201040091604 is a wasteful number, since it uses less digits than its factorization.

201040091604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22072957 (or 22072952 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 201040091604 in words is "two hundred one billion, forty million, ninety-one thousand, six hundred four".