1315651129605 has 64 divisors (see below), whose sum is σ = 2502398764800. Its totient is φ = 653852424960.

The previous prime is 1315651129603. The next prime is 1315651129609. The reversal of 1315651129605 is 5069211565131.

1315651129605 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 6 + 5 + 11 + 29 + 605 = 666.

It is not a de Polignac number, because 1315651129605 - 2¹ = 1315651129603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315651129603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4047834 + ... + 4360763.

It is an arithmetic number, because the mean of its divisors is an integer number (39099980700).

Almost surely, 2^{1315651129605} is an apocalyptic number.

1315651129605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315651129605 is a deficient number, since it is larger than the sum of its proper divisors (1186747635195).

1315651129605 is a wasteful number, since it uses less digits than its factorization.

1315651129605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8408691 (or 8408685 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 1315651129605 in words is "one trillion, three hundred fifteen billion, six hundred fifty-one million, one hundred twenty-nine thousand, six hundred five".