1015201144543 has 4 divisors (see below), whose sum is σ = 1015203920968. Its totient is φ = 1015198368120.

The previous prime is 1015201144469. The next prime is 1015201144567. The reversal of 1015201144543 is 3454411025101.

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

It is a cyclic number.

It is not a de Polignac number, because 1015201144543 - 2²⁵ = 1015167590111 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 (1015201144943) 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, 738321 + ... + 1604842.

It is an arithmetic number, because the mean of its divisors is an integer number (253800980242).

Almost surely, 2^{1015201144543} is an apocalyptic number.

1015201144543 is a deficient number, since it is larger than the sum of its proper divisors (2776425).

1015201144543 is an equidigital number, since it uses as much as digits as its factorization.

1015201144543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776424.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1015201144543 its reverse (3454411025101), we get a palindrome (4469612169644).

The spelling of 1015201144543 in words is "one trillion, fifteen billion, two hundred one million, one hundred forty-four thousand, five hundred forty-three".