1315663155642 has 128 divisors (see below), whose sum is σ = 2993584112640. Its totient is φ = 381946544640.

The previous prime is 1315663155641. The next prime is 1315663155649. The reversal of 1315663155642 is 2465513665131.

It is a super-2 number, since 2×1315663155642² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1315663155591 and 1315663155600.

It is not an unprimeable number, because it can be changed into a prime (1315663155641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110340693 + ... + 110352615.

It is an arithmetic number, because the mean of its divisors is an integer number (23387375880).

Almost surely, 2^{1315663155642} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315663155642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496792056320).

1315663155642 is an abundant number, since it is smaller than the sum of its proper divisors (1677920956998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315663155642 is a wasteful number, since it uses less digits than its factorization.

1315663155642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12668.

The product of its digits is 1944000, while the sum is 48.

The spelling of 1315663155642 in words is "one trillion, three hundred fifteen billion, six hundred sixty-three million, one hundred fifty-five thousand, six hundred forty-two".