1356122566656 has 416 divisors, whose sum is σ = 4720091927040. Its totient is φ = 379330560000.

The previous prime is 1356122566639. The next prime is 1356122566699. The reversal of 1356122566656 is 6566652216531.

It is a tau number, because it is divible by the number of its divisors (416).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 15771781 + ... + 15857531.

Almost surely, 2^{1356122566656} is an apocalyptic number.

1356122566656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356122566656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360045963520).

1356122566656 is an abundant number, since it is smaller than the sum of its proper divisors (3363969360384).

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

1356122566656 is a wasteful number, since it uses less digits than its factorization.

1356122566656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85808 (or 85780 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The spelling of 1356122566656 in words is "one trillion, three hundred fifty-six billion, one hundred twenty-two million, five hundred sixty-six thousand, six hundred fifty-six".