541206115512901 has 4 divisors (see below), whose sum is σ = 541474437832972. Its totient is φ = 540937793192832.

The previous prime is 541206115512877. The next prime is 541206115512967. The reversal of 541206115512901 is 109215511602145.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 280114616390625 + 261091499122276 = 16736625^2 + 16158326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541206115512901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541206115512991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134161157010 + ... + 134161161043.

It is an arithmetic number, because the mean of its divisors is an integer number (135368609458243).

Almost surely, 2^{541206115512901} is an apocalyptic number.

It is an amenable number.

541206115512901 is a deficient number, since it is larger than the sum of its proper divisors (268322320071).

541206115512901 is a wasteful number, since it uses less digits than its factorization.

541206115512901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268322320070.

The product of its (nonzero) digits is 108000, while the sum is 43.

The spelling of 541206115512901 in words is "five hundred forty-one trillion, two hundred six billion, one hundred fifteen million, five hundred twelve thousand, nine hundred one".