1151542105205 has 16 divisors (see below), whose sum is σ = 1387974495600. Its totient is φ = 917151559680.

The previous prime is 1151542105111. The next prime is 1151542105243. The reversal of 1151542105205 is 5025012451511.

It can be written as a sum of positive squares in 8 ways, for example, as 1412406724 + 1150129698481 = 37582^2 + 1072441^2 .

It is not a de Polignac number, because 1151542105205 - 2⁸ = 1151542104949 is a prime.

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, 29073515 + ... + 29113095.

It is an arithmetic number, because the mean of its divisors is an integer number (86748405975).

Almost surely, 2^{1151542105205} is an apocalyptic number.

It is an amenable number.

1151542105205 is a deficient number, since it is larger than the sum of its proper divisors (236432390395).

1151542105205 is a wasteful number, since it uses less digits than its factorization.

1151542105205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65224.

The product of its (nonzero) digits is 10000, while the sum is 32.

Adding to 1151542105205 its reverse (5025012451511), we get a palindrome (6176554556716).

The spelling of 1151542105205 in words is "one trillion, one hundred fifty-one billion, five hundred forty-two million, one hundred five thousand, two hundred five".