1253379135518 has 16 divisors (see below), whose sum is σ = 1993465095120. Its totient is φ = 589372284096.

The previous prime is 1253379135509. The next prime is 1253379135521. The reversal of 1253379135518 is 8155319733521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253379135518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120373121 + ... + 120383532.

It is an arithmetic number, because the mean of its divisors is an integer number (124591568445).

Almost surely, 2^{1253379135518} is an apocalyptic number.

1253379135518 is a deficient number, since it is larger than the sum of its proper divisors (740085959602).

1253379135518 is a wasteful number, since it uses less digits than its factorization.

1253379135518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240756811.

The product of its digits is 3402000, while the sum is 53.

The spelling of 1253379135518 in words is "one trillion, two hundred fifty-three billion, three hundred seventy-nine million, one hundred thirty-five thousand, five hundred eighteen".