20356633516411 has 16 divisors (see below), whose sum is σ = 20848729765248. Its totient is φ = 19865394360000.

The previous prime is 20356633516403. The next prime is 20356633516423. The reversal of 20356633516411 is 11461533665302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20356633516411 - 2³ = 20356633516403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20356633516441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233653320 + ... + 233740426.

It is an arithmetic number, because the mean of its divisors is an integer number (1303045610328).

Almost surely, 2^{20356633516411} is an apocalyptic number.

20356633516411 is a deficient number, since it is larger than the sum of its proper divisors (492096248837).

20356633516411 is a wasteful number, since it uses less digits than its factorization.

20356633516411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91962.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 20356633516411 in words is "twenty trillion, three hundred fifty-six billion, six hundred thirty-three million, five hundred sixteen thousand, four hundred eleven".