201138962427 has 40 divisors (see below), whose sum is σ = 331104862704. Its totient is φ = 120899241792.

The previous prime is 201138962413. The next prime is 201138962461. The reversal of 201138962427 is 724269831102.

201138962427 is a `hidden beast` number, since 2 + 0 + 1 + 13 + 8 + 9 + 624 + 2 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-201138962427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201138962467) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2175828 + ... + 2266385.

Almost surely, 2^201138962427 is an apocalyptic number.

201138962427 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

201138962427 is a deficient number, since it is larger than the sum of its proper divisors (129965900277).

201138962427 is a wasteful number, since it uses less digits than its factorization.

201138962427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4442281 (or 4442272 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 201138962427 in words is "two hundred one billion, one hundred thirty-eight million, nine hundred sixty-two thousand, four hundred twenty-seven".