20531052141140 has 48 divisors (see below), whose sum is σ = 44033154681600. Its totient is φ = 8037578919552.

The previous prime is 20531052141121. The next prime is 20531052141191. The reversal of 20531052141140 is 4114125013502.

It is a happy number.

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, 122924006 + ... + 123090914.

It is an arithmetic number, because the mean of its divisors is an integer number (917357389200).

Almost surely, 2^{20531052141140} is an apocalyptic number.

20531052141140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20531052141140 is an abundant number, since it is smaller than the sum of its proper divisors (23502102540460).

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

20531052141140 is a wasteful number, since it uses less digits than its factorization.

20531052141140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297824 (or 297822 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 20531052141140 its reverse (4114125013502), we get a palindrome (24645177154642).

The spelling of 20531052141140 in words is "twenty trillion, five hundred thirty-one billion, fifty-two million, one hundred forty-one thousand, one hundred forty".