633640795011 has 32 divisors (see below), whose sum is σ = 1073028395520. Its totient is φ = 362013825312.

The previous prime is 633640794989. The next prime is 633640795163. The reversal of 633640795011 is 110597046336.

It is a happy number.

633640795011 is a `hidden beast` number, since 6 + 3 + 36 + 40 + 79 + 501 + 1 = 666.

It is not a de Polignac number, because 633640795011 - 2¹³ = 633640786819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (633640795211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 730561 + ... + 1342013.

It is an arithmetic number, because the mean of its divisors is an integer number (33532137360).

Almost surely, 2^633640795011 is an apocalyptic number.

633640795011 is a deficient number, since it is larger than the sum of its proper divisors (439387600509).

633640795011 is a wasteful number, since it uses less digits than its factorization.

633640795011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616952 (or 616946 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 633640795011 in words is "six hundred thirty-three billion, six hundred forty million, seven hundred ninety-five thousand, eleven".