540420500203551 has 32 divisors (see below), whose sum is σ = 873467575545600. Its totient is φ = 327504810932640.

The previous prime is 540420500203499. The next prime is 540420500203567. The reversal of 540420500203551 is 155302005024045.

540420500203551 is a `hidden beast` number, since 5 + 40 + 42 + 0 + 5 + 0 + 0 + 20 + 3 + 551 = 666.

It is not a de Polignac number, because 540420500203551 - 2¹⁵ = 540420500170783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540420500203751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58955241 + ... + 67502306.

It is an arithmetic number, because the mean of its divisors is an integer number (27295861735800).

Almost surely, 2^{540420500203551} is an apocalyptic number.

540420500203551 is a deficient number, since it is larger than the sum of its proper divisors (333047075342049).

540420500203551 is a wasteful number, since it uses less digits than its factorization.

540420500203551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126471956 (or 126471950 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 540420500203551 its reverse (155302005024045), we get a palindrome (695722505227596).

The spelling of 540420500203551 in words is "five hundred forty trillion, four hundred twenty billion, five hundred million, two hundred three thousand, five hundred fifty-one".