1381258528815 has 32 divisors (see below), whose sum is σ = 2552743040256. Its totient is φ = 630306920960.

The previous prime is 1381258528729. The next prime is 1381258528817. The reversal of 1381258528815 is 5188258521831.

It is not a de Polignac number, because 1381258528815 - 2¹⁰ = 1381258527791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381258528817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246210837 + ... + 246216446.

It is an arithmetic number, because the mean of its divisors is an integer number (79773220008).

Almost surely, 2^{1381258528815} is an apocalyptic number.

1381258528815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1381258528815 is a deficient number, since it is larger than the sum of its proper divisors (1171484511441).

1381258528815 is a wasteful number, since it uses less digits than its factorization.

1381258528815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492427319.

The product of its digits is 6144000, while the sum is 57.

The spelling of 1381258528815 in words is "one trillion, three hundred eighty-one billion, two hundred fifty-eight million, five hundred twenty-eight thousand, eight hundred fifteen".