20210326690971 has 4 divisors (see below), whose sum is σ = 26947102254632. Its totient is φ = 13473551127312.

The previous prime is 20210326690963. The next prime is 20210326691101. The reversal of 20210326690971 is 17909662301202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20210326690971 - 2³ = 20210326690963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20210326690971.

It is not an unprimeable number, because it can be changed into a prime (20210326690471) 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, 3368387781826 + ... + 3368387781831.

It is an arithmetic number, because the mean of its divisors is an integer number (6736775563658).

Almost surely, 2^{20210326690971} is an apocalyptic number.

20210326690971 is a deficient number, since it is larger than the sum of its proper divisors (6736775563661).

20210326690971 is an equidigital number, since it uses as much as digits as its factorization.

20210326690971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736775563660.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 20210326690971 in words is "twenty trillion, two hundred ten billion, three hundred twenty-six million, six hundred ninety thousand, nine hundred seventy-one".