1201116142565 has 16 divisors (see below), whose sum is σ = 1459759168560. Its totient is φ = 948661493760.

The previous prime is 1201116142549. The next prime is 1201116142571. The reversal of 1201116142565 is 5652416111021.

It can be written as a sum of positive squares in 8 ways, for example, as 292466803204 + 908649339361 = 540802^2 + 953231^2 .

It is not a de Polignac number, because 1201116142565 - 2⁴ = 1201116142549 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, 2829176 + ... + 3225905.

It is an arithmetic number, because the mean of its divisors is an integer number (91234948035).

Almost surely, 2^{1201116142565} is an apocalyptic number.

It is an amenable number.

1201116142565 is a deficient number, since it is larger than the sum of its proper divisors (258643025995).

1201116142565 is an equidigital number, since it uses as much as digits as its factorization.

1201116142565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055592.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 1201116142565 in words is "one trillion, two hundred one billion, one hundred sixteen million, one hundred forty-two thousand, five hundred sixty-five".