133639011 has 16 divisors (see below), whose sum is σ = 215982720. Its totient is φ = 80993160.

The previous prime is 133639003. The next prime is 133639019. The reversal of 133639011 is 110936331.

133639011 is a `hidden beast` number, since 13 + 3 + 639 + 0 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (133639003) and next prime (133639019).

It is not a de Polignac number, because 133639011 - 2³ = 133639003 is a prime.

It is a super-2 number, since 2×133639011² = 35718770522116242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133639019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224685 + ... + 225278.

It is an arithmetic number, because the mean of its divisors is an integer number (13498920).

Almost surely, 2^133639011 is an apocalyptic number.

133639011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133639011 is a deficient number, since it is larger than the sum of its proper divisors (82343709).

133639011 is a wasteful number, since it uses less digits than its factorization.

133639011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449983 (or 449977 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 133639011 is about 11560.2340374233. The cubic root of 133639011 is about 511.2630630944.

The spelling of 133639011 in words is "one hundred thirty-three million, six hundred thirty-nine thousand, eleven".