20311140642632 has 16 divisors (see below), whose sum is σ = 43523872805760. Its totient is φ = 8704774561104.

The previous prime is 20311140642619. The next prime is 20311140642691. The reversal of 20311140642632 is 23624604111302.

It is a junction number, because it is equal to n+sod(n) for n = 20311140642592 and 20311140642601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181349469968 + ... + 181349470079.

It is an arithmetic number, because the mean of its divisors is an integer number (2720242050360).

Almost surely, 2^{20311140642632} is an apocalyptic number.

It is an amenable number.

20311140642632 is an abundant number, since it is smaller than the sum of its proper divisors (23212732163128).

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

20311140642632 is a wasteful number, since it uses less digits than its factorization.

20311140642632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362698940060 (or 362698940056 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 20311140642632 its reverse (23624604111302), we get a palindrome (43935744753934).

The spelling of 20311140642632 in words is "twenty trillion, three hundred eleven billion, one hundred forty million, six hundred forty-two thousand, six hundred thirty-two".