2165631246402 has 32 divisors (see below), whose sum is σ = 4698483535872. Its totient is φ = 661484217984.

The previous prime is 2165631246349. The next prime is 2165631246407. The reversal of 2165631246402 is 2046421365612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2165631246407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101319618 + ... + 101340989.

It is an arithmetic number, because the mean of its divisors is an integer number (146827610496).

Almost surely, 2^{2165631246402} is an apocalyptic number.

2165631246402 is an abundant number, since it is smaller than the sum of its proper divisors (2532852289470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165631246402 is a wasteful number, since it uses less digits than its factorization.

2165631246402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202660762.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 2165631246402 in words is "two trillion, one hundred sixty-five billion, six hundred thirty-one million, two hundred forty-six thousand, four hundred two".