1313206522440 has 128 divisors (see below), whose sum is σ = 4164321024000. Its totient is φ = 330369193728.

The previous prime is 1313206522403. The next prime is 1313206522451. The reversal of 1313206522440 is 442256023131.

It is a super-2 number, since 2×1313206522440² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660034 + ... + 1749873.

It is an arithmetic number, because the mean of its divisors is an integer number (32533758000).

Almost surely, 2^{1313206522440} is an apocalyptic number.

1313206522440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313206522440 is an abundant number, since it is smaller than the sum of its proper divisors (2851114501560).

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

1313206522440 is a wasteful number, since it uses less digits than its factorization.

1313206522440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410179 (or 2410175 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 1313206522440 in words is "one trillion, three hundred thirteen billion, two hundred six million, five hundred twenty-two thousand, four hundred forty".