1356705343880 has 16 divisors (see below), whose sum is σ = 3052587023820. Its totient is φ = 542682137536.

The previous prime is 1356705343817. The next prime is 1356705343913. The reversal of 1356705343880 is 883435076531.

It can be written as a sum of positive squares in 2 ways, for example, as 1356577337284 + 128006596 = 1164722^2 + 11314^2 .

It is a super-2 number, since 2×1356705343880² (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 3 ways as a sum of consecutive naturals, for example, 16958816759 + ... + 16958816838.

Almost surely, 2^{1356705343880} is an apocalyptic number.

1356705343880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356705343880 is an abundant number, since it is smaller than the sum of its proper divisors (1695881679940).

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

1356705343880 is a wasteful number, since it uses less digits than its factorization.

1356705343880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33917633608 (or 33917633604 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 1356705343880 in words is "one trillion, three hundred fifty-six billion, seven hundred five million, three hundred forty-three thousand, eight hundred eighty".