1015120640603 has 16 divisors (see below), whose sum is σ = 1132052065920. Its totient is φ = 904604443776.

The previous prime is 1015120640561. The next prime is 1015120640617. The reversal of 1015120640603 is 3060460215101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1015120640603 - 2⁶ = 1015120640539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1015120640663) 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, 335201 + ... + 1463762.

It is an arithmetic number, because the mean of its divisors is an integer number (70753254120).

Almost surely, 2^{1015120640603} is an apocalyptic number.

1015120640603 is a deficient number, since it is larger than the sum of its proper divisors (116931425317).

1015120640603 is a wasteful number, since it uses less digits than its factorization.

1015120640603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800746.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 1015120640603 its reverse (3060460215101), we get a palindrome (4075580855704).

The spelling of 1015120640603 in words is "one trillion, fifteen billion, one hundred twenty million, six hundred forty thousand, six hundred three".