20955529756698 has 16 divisors (see below), whose sum is σ = 41993399518560. Its totient is φ = 6971453251376.

The previous prime is 20955529756673. The next prime is 20955529756823. The reversal of 20955529756698 is 89665792555902.

It is a happy number.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430830240 + ... + 3430836347.

It is an arithmetic number, because the mean of its divisors is an integer number (2624587469910).

Almost surely, 2^{20955529756698} is an apocalyptic number.

20955529756698 is an abundant number, since it is smaller than the sum of its proper divisors (21037869761862).

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

20955529756698 is a wasteful number, since it uses less digits than its factorization.

20955529756698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6861667101.

The product of its (nonzero) digits is 3674160000, while the sum is 78.

The spelling of 20955529756698 in words is "twenty trillion, nine hundred fifty-five billion, five hundred twenty-nine million, seven hundred fifty-six thousand, six hundred ninety-eight".