20699205041632 has 96 divisors (see below), whose sum is σ = 45393169348800. Its totient is φ = 9229976801280.

The previous prime is 20699205041617. The next prime is 20699205041657. The reversal of 20699205041632 is 23614050299602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4134507 + ... + 7648042.

It is an arithmetic number, because the mean of its divisors is an integer number (472845514050).

Almost surely, 2^{20699205041632} is an apocalyptic number.

It is an amenable number.

20699205041632 is an abundant number, since it is smaller than the sum of its proper divisors (24693964307168).

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

20699205041632 is a wasteful number, since it uses less digits than its factorization.

20699205041632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11782716 (or 11782708 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 20699205041632 in words is "twenty trillion, six hundred ninety-nine billion, two hundred five million, forty-one thousand, six hundred thirty-two".