1540104323011 has 12 divisors (see below), whose sum is σ = 1552673816112. Its totient is φ = 1527635794608.

The previous prime is 1540104322987. The next prime is 1540104323039. The reversal of 1540104323011 is 1103234010451.

It is not a de Polignac number, because 1540104323011 - 2³⁹ = 990348509123 is a prime.

It is a super-2 number, since 2×1540104323011² (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 (1540104323041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102782626 + ... + 102797608.

It is an arithmetic number, because the mean of its divisors is an integer number (129389484676).

Almost surely, 2^{1540104323011} is an apocalyptic number.

1540104323011 is a deficient number, since it is larger than the sum of its proper divisors (12569493101).

1540104323011 is an equidigital number, since it uses as much as digits as its factorization.

1540104323011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21610 (or 21483 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1540104323011 its reverse (1103234010451), we get a palindrome (2643338333462).

The spelling of 1540104323011 in words is "one trillion, five hundred forty billion, one hundred four million, three hundred twenty-three thousand, eleven".