20686707833354 has 8 divisors (see below), whose sum is σ = 31786892524548. Its totient is φ = 10091076991840.

The previous prime is 20686707833347. The next prime is 20686707833357. The reversal of 20686707833354 is 45333870768602.

It can be written as a sum of positive squares in 2 ways, for example, as 19450437370225 + 1236270463129 = 4410265^2 + 1111877^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20686707833357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126138462317 + ... + 126138462480.

Almost surely, 2^{20686707833354} is an apocalyptic number.

20686707833354 is a deficient number, since it is larger than the sum of its proper divisors (11100184691194).

20686707833354 is a wasteful number, since it uses less digits than its factorization.

20686707833354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252276924840.

The product of its (nonzero) digits is 121927680, while the sum is 62.

The spelling of 20686707833354 in words is "twenty trillion, six hundred eighty-six billion, seven hundred seven million, eight hundred thirty-three thousand, three hundred fifty-four".