1540320344299 has 16 divisors (see below), whose sum is σ = 1749364535520. Its totient is φ = 1343393775360.

The previous prime is 1540320344293. The next prime is 1540320344389. The reversal of 1540320344299 is 9924430230451.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1540320344299 - 2¹⁵ = 1540320311531 is a prime.

It is a super-2 number, since 2×1540320344299² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540320344293) 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 15 ways as a sum of consecutive naturals, for example, 15327594 + ... + 15427759.

It is an arithmetic number, because the mean of its divisors is an integer number (109335283470).

Almost surely, 2^{1540320344299} is an apocalyptic number.

1540320344299 is a deficient number, since it is larger than the sum of its proper divisors (209044191221).

1540320344299 is a wasteful number, since it uses less digits than its factorization.

1540320344299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30755550.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 1540320344299 in words is "one trillion, five hundred forty billion, three hundred twenty million, three hundred forty-four thousand, two hundred ninety-nine".