21632012462140 has 48 divisors (see below), whose sum is σ = 45589938186240. Its totient is φ = 8621815164480.

The previous prime is 21632012462087. The next prime is 21632012462191. The reversal of 21632012462140 is 4126421023612.

It is a junction number, because it is equal to n+sod(n) for n = 21632012462096 and 21632012462105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135256341 + ... + 135416179.

It is an arithmetic number, because the mean of its divisors is an integer number (949790378880).

Almost surely, 2^{21632012462140} is an apocalyptic number.

21632012462140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21632012462140 is an abundant number, since it is smaller than the sum of its proper divisors (23957925724100).

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

21632012462140 is a wasteful number, since it uses less digits than its factorization.

21632012462140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184042 (or 184040 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 21632012462140 its reverse (4126421023612), we get a palindrome (25758433485752).

The spelling of 21632012462140 in words is "twenty-one trillion, six hundred thirty-two billion, twelve million, four hundred sixty-two thousand, one hundred forty".