1611425323885 has 16 divisors (see below), whose sum is σ = 2103925982256. Its totient is φ = 1177707829248.

The previous prime is 1611425323763. The next prime is 1611425323889. The reversal of 1611425323885 is 5883235241161.

It can be written as a sum of positive squares in 8 ways, for example, as 402142417609 + 1209282906276 = 634147^2 + 1099674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611425323885 - 2⁹ = 1611425323373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611425323889) 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, 127783174 + ... + 127795783.

It is an arithmetic number, because the mean of its divisors is an integer number (131495373891).

Almost surely, 2^{1611425323885} is an apocalyptic number.

It is an amenable number.

1611425323885 is a deficient number, since it is larger than the sum of its proper divisors (492500658371).

1611425323885 is a wasteful number, since it uses less digits than its factorization.

1611425323885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255579072.

The product of its digits is 1382400, while the sum is 49.

The spelling of 1611425323885 in words is "one trillion, six hundred eleven billion, four hundred twenty-five million, three hundred twenty-three thousand, eight hundred eighty-five".