1240520016045 has 16 divisors (see below), whose sum is σ = 1985298160320. Its totient is φ = 661455297024.

The previous prime is 1240520016019. The next prime is 1240520016049. The reversal of 1240520016045 is 5406100250421.

It is not a de Polignac number, because 1240520016045 - 2⁶ = 1240520015981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240520016049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9645124 + ... + 9772893.

It is an arithmetic number, because the mean of its divisors is an integer number (124081135020).

Almost surely, 2^{1240520016045} is an apocalyptic number.

1240520016045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240520016045 is a deficient number, since it is larger than the sum of its proper divisors (744778144275).

1240520016045 is a wasteful number, since it uses less digits than its factorization.

1240520016045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19422284.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1240520016045 its reverse (5406100250421), we get a palindrome (6646620266466).

The spelling of 1240520016045 in words is "one trillion, two hundred forty billion, five hundred twenty million, sixteen thousand, forty-five".