1344611026561 has 16 divisors (see below), whose sum is σ = 1481494828608. Its totient is φ = 1210170312000.

The previous prime is 1344611026547. The next prime is 1344611026589. The reversal of 1344611026561 is 1656201164431.

It is a cyclic number.

It is not a de Polignac number, because 1344611026561 - 2¹⁹ = 1344610502273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1344611026061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15469555 + ... + 15556231.

It is an arithmetic number, because the mean of its divisors is an integer number (92593426788).

Almost surely, 2^{1344611026561} is an apocalyptic number.

1344611026561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344611026561 is a deficient number, since it is larger than the sum of its proper divisors (136883802047).

1344611026561 is a wasteful number, since it uses less digits than its factorization.

1344611026561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100752.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 1344611026561 in words is "one trillion, three hundred forty-four billion, six hundred eleven million, twenty-six thousand, five hundred sixty-one".