1616453225971 has 4 divisors (see below), whose sum is σ = 1616487548344. Its totient is φ = 1616418903600.

The previous prime is 1616453225929. The next prime is 1616453226007. The reversal of 1616453225971 is 1795223546161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1616453225971 - 2¹³ = 1616453217779 is a prime.

It is a super-2 number, since 2×1616453225971² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616453225911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17090445 + ... + 17184766.

It is an arithmetic number, because the mean of its divisors is an integer number (404121887086).

Almost surely, 2^{1616453225971} is an apocalyptic number.

1616453225971 is a deficient number, since it is larger than the sum of its proper divisors (34322373).

1616453225971 is an equidigital number, since it uses as much as digits as its factorization.

1616453225971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34322372.

The product of its digits is 2721600, while the sum is 52.

The spelling of 1616453225971 in words is "one trillion, six hundred sixteen billion, four hundred fifty-three million, two hundred twenty-five thousand, nine hundred seventy-one".