1616426566172 has 24 divisors (see below), whose sum is σ = 3086488283760. Its totient is φ = 734600533760.

The previous prime is 1616426566163. The next prime is 1616426566177. The reversal of 1616426566172 is 2716656246161.

It is a super-2 number, since 2×1616426566172² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616426566177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3234647 + ... + 3700782.

It is an arithmetic number, because the mean of its divisors is an integer number (128603678490).

Almost surely, 2^{1616426566172} is an apocalyptic number.

It is an amenable number.

1616426566172 is a deficient number, since it is larger than the sum of its proper divisors (1470061717588).

1616426566172 is a wasteful number, since it uses less digits than its factorization.

1616426566172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6940741 (or 6940739 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 1616426566172 in words is "one trillion, six hundred sixteen billion, four hundred twenty-six million, five hundred sixty-six thousand, one hundred seventy-two".