20205201123544 has 32 divisors (see below), whose sum is σ = 38541238560000. Its totient is φ = 9927842238720.

The previous prime is 20205201123529. The next prime is 20205201123599. The reversal of 20205201123544 is 44532110250202.

It is a happy number.

It is a super-2 number, since 2×20205201123544² (a number of 27 digits) contains 22 as substring.

It is a congruent 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, 18514669 + ... + 19575580.

It is an arithmetic number, because the mean of its divisors is an integer number (1204413705000).

Almost surely, 2^{20205201123544} is an apocalyptic number.

It is an amenable number.

20205201123544 is a deficient number, since it is larger than the sum of its proper divisors (18336037436456).

20205201123544 is a wasteful number, since it uses less digits than its factorization.

20205201123544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38091403 (or 38091399 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20205201123544 its reverse (44532110250202), we get a palindrome (64737311373746).

The spelling of 20205201123544 in words is "twenty trillion, two hundred five billion, two hundred one million, one hundred twenty-three thousand, five hundred forty-four".