133240549971 has 16 divisors (see below), whose sum is σ = 181778320800. Its totient is φ = 86784453120.

The previous prime is 133240549961. The next prime is 133240549991. The reversal of 133240549971 is 179945042331.

It is not a de Polignac number, because 133240549971 - 2⁶ = 133240549907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133240549971.

It is not an unprimeable number, because it can be changed into a prime (133240549921) 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, 2415990 + ... + 2470523.

It is an arithmetic number, because the mean of its divisors is an integer number (11361145050).

Almost surely, 2^133240549971 is an apocalyptic number.

133240549971 is a deficient number, since it is larger than the sum of its proper divisors (48537770829).

133240549971 is a wasteful number, since it uses less digits than its factorization.

133240549971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886726.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 133240549971 in words is "one hundred thirty-three billion, two hundred forty million, five hundred forty-nine thousand, nine hundred seventy-one".