65631105001 has 16 divisors (see below), whose sum is σ = 82213613568. Its totient is φ = 50898733200.

The previous prime is 65631104971. The next prime is 65631105017. The reversal of 65631105001 is 10050113656.

It is not a de Polignac number, because 65631105001 - 2¹⁵ = 65631072233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65631105601) 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, 2003545 + ... + 2036038.

It is an arithmetic number, because the mean of its divisors is an integer number (5138350848).

Almost surely, 2^65631105001 is an apocalyptic number.

It is an amenable number.

65631105001 is a deficient number, since it is larger than the sum of its proper divisors (16582508567).

65631105001 is a wasteful number, since it uses less digits than its factorization.

65631105001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039812.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 65631105001 its reverse (10050113656), we get a palindrome (75681218657).

The spelling of 65631105001 in words is "sixty-five billion, six hundred thirty-one million, one hundred five thousand, one".