1313151261642 has 24 divisors (see below), whose sum is σ = 3103812073440. Its totient is φ = 397924624680.

The previous prime is 1313151261613. The next prime is 1313151261683. The reversal of 1313151261642 is 2461621513131.

1313151261642 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 1 + 5 + 1 + 2 + 6 + 1 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1313151261597 and 1313151261606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3316038342 + ... + 3316038737.

It is an arithmetic number, because the mean of its divisors is an integer number (129325503060).

Almost surely, 2^{1313151261642} is an apocalyptic number.

1313151261642 is an abundant number, since it is smaller than the sum of its proper divisors (1790660811798).

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

1313151261642 is a wasteful number, since it uses less digits than its factorization.

1313151261642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632077098 (or 6632077095 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

Adding to 1313151261642 its reverse (2461621513131), we get a palindrome (3774772774773).

The spelling of 1313151261642 in words is "one trillion, three hundred thirteen billion, one hundred fifty-one million, two hundred sixty-one thousand, six hundred forty-two".