201349137906 has 80 divisors (see below), whose sum is σ = 515705724864. Its totient is φ = 57519235296.

The previous prime is 201349137863. The next prime is 201349137923. The reversal of 201349137906 is 609731943102.

201349137906 is a `hidden beast` number, since 201 + 349 + 13 + 7 + 90 + 6 = 666.

It is a super-4 number, since 4×201349137906⁴ (a number of 46 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10925956 + ... + 10944368.

Almost surely, 2^201349137906 is an apocalyptic number.

201349137906 is an abundant number, since it is smaller than the sum of its proper divisors (314356586958).

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

201349137906 is a wasteful number, since it uses less digits than its factorization.

201349137906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28077 (or 28068 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 201349137906 in words is "two hundred one billion, three hundred forty-nine million, one hundred thirty-seven thousand, nine hundred six".