101543000256541 has 4 divisors (see below), whose sum is σ = 101543031130684. Its totient is φ = 101542969382400.

The previous prime is 101543000256457. The next prime is 101543000256589. The reversal of 101543000256541 is 145652000345101.

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 22020926481316 + 79522073775225 = 4692646^2 + 8917515^2 .

It is a cyclic number.

It is not a de Polignac number, because 101543000256541 - 2⁹ = 101543000256029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101543000256541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101543000254541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9823140 + ... + 17308381.

It is an arithmetic number, because the mean of its divisors is an integer number (25385757782671).

Almost surely, 2^{101543000256541} is an apocalyptic number.

It is an amenable number.

101543000256541 is a deficient number, since it is larger than the sum of its proper divisors (30874143).

101543000256541 is an equidigital number, since it uses as much as digits as its factorization.

101543000256541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30874142.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 101543000256541 in words is "one hundred one trillion, five hundred forty-three billion, two hundred fifty-six thousand, five hundred forty-one".