20206154890822 has 32 divisors (see below), whose sum is σ = 31934688307200. Its totient is φ = 9570235248288.

The previous prime is 20206154890807. The next prime is 20206154890861. The reversal of 20206154890822 is 22809845160202.

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, 2822622 + ... + 6955537.

It is an arithmetic number, because the mean of its divisors is an integer number (997959009600).

Almost surely, 2^{20206154890822} is an apocalyptic number.

20206154890822 is a deficient number, since it is larger than the sum of its proper divisors (11728533416378).

20206154890822 is a wasteful number, since it uses less digits than its factorization.

20206154890822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778620.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 20206154890822 in words is "twenty trillion, two hundred six billion, one hundred fifty-four million, eight hundred ninety thousand, eight hundred twenty-two".