1556144261364 has 96 divisors (see below), whose sum is σ = 4529241916416. Its totient is φ = 403990030080.

The previous prime is 1556144261327. The next prime is 1556144261377. The reversal of 1556144261364 is 4631624416551.

It is a super-2 number, since 2×1556144261364² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1419019 + ... + 2264045.

It is an arithmetic number, because the mean of its divisors is an integer number (47179603296).

Almost surely, 2^{1556144261364} is an apocalyptic number.

1556144261364 is a gapful number since it is divisible by the number (14) 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 1556144261364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2264620958208).

1556144261364 is an abundant number, since it is smaller than the sum of its proper divisors (2973097655052).

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

1556144261364 is a wasteful number, since it uses less digits than its factorization.

1556144261364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847045 (or 847043 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The spelling of 1556144261364 in words is "one trillion, five hundred fifty-six billion, one hundred forty-four million, two hundred sixty-one thousand, three hundred sixty-four".