1313122136646 has 32 divisors (see below), whose sum is σ = 2632603246848. Its totient is φ = 436647875040.

The previous prime is 1313122136629. The next prime is 1313122136701. The reversal of 1313122136646 is 6466312213131.

It is a super-2 number, since 2×1313122136646² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17667855 + ... + 17742021.

It is an arithmetic number, because the mean of its divisors is an integer number (82268851464).

Almost surely, 2^{1313122136646} is an apocalyptic number.

1313122136646 is an abundant number, since it is smaller than the sum of its proper divisors (1319481110202).

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

1313122136646 is a wasteful number, since it uses less digits than its factorization.

1313122136646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81276.

The product of its digits is 93312, while the sum is 39.

Adding to 1313122136646 its reverse (6466312213131), we get a palindrome (7779434349777).

The spelling of 1313122136646 in words is "one trillion, three hundred thirteen billion, one hundred twenty-two million, one hundred thirty-six thousand, six hundred forty-six".