20105542212354 has 12 divisors (see below), whose sum is σ = 43562008126806. Its totient is φ = 6701847404112.

The previous prime is 20105542212341. The next prime is 20105542212401. The reversal of 20105542212354 is 45321224550102.

20105542212354 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 55 + 42 + 212 + 354 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19561805574129 + 543736638225 = 4422873^2 + 737385^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558487283659 + ... + 558487283694.

Almost surely, 2^{20105542212354} is an apocalyptic number.

20105542212354 is an abundant number, since it is smaller than the sum of its proper divisors (23456465914452).

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

20105542212354 is a wasteful number, since it uses less digits than its factorization.

20105542212354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116974567361 (or 1116974567358 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 20105542212354 its reverse (45321224550102), we get a palindrome (65426766762456).

The spelling of 20105542212354 in words is "twenty trillion, one hundred five billion, five hundred forty-two million, two hundred twelve thousand, three hundred fifty-four".