635131402005 has 16 divisors (see below), whose sum is σ = 1040995859904. Its totient is φ = 330474875520.

The previous prime is 635131401859. The next prime is 635131402049. The reversal of 635131402005 is 500204131536.

It is not a de Polignac number, because 635131402005 - 2¹⁴ = 635131385621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516366379 + ... + 516367608.

It is an arithmetic number, because the mean of its divisors is an integer number (65062241244).

Almost surely, 2^635131402005 is an apocalyptic number.

It is an amenable number.

635131402005 is a deficient number, since it is larger than the sum of its proper divisors (405864457899).

635131402005 is a wasteful number, since it uses less digits than its factorization.

635131402005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032734036.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 635131402005 in words is "six hundred thirty-five billion, one hundred thirty-one million, four hundred two thousand, five".