1540265320067 has 4 divisors (see below), whose sum is σ = 1621331915880. Its totient is φ = 1459198724256.

The previous prime is 1540265320051. The next prime is 1540265320117. The reversal of 1540265320067 is 7600235620451.

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 1540265320067 - 2⁴ = 1540265320051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540265320567) 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, 40533297878 + ... + 40533297915.

It is an arithmetic number, because the mean of its divisors is an integer number (405332978970).

Almost surely, 2^{1540265320067} is an apocalyptic number.

1540265320067 is a deficient number, since it is larger than the sum of its proper divisors (81066595813).

1540265320067 is an equidigital number, since it uses as much as digits as its factorization.

1540265320067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81066595812.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 1540265320067 in words is "one trillion, five hundred forty billion, two hundred sixty-five million, three hundred twenty thousand, sixty-seven".