1616625115021 has 16 divisors (see below), whose sum is σ = 1887669043200. Its totient is φ = 1355630166000.

The previous prime is 1616625114991. The next prime is 1616625115057. The reversal of 1616625115021 is 1205115266161.

It is a cyclic number.

It is not a de Polignac number, because 1616625115021 - 2⁹ = 1616625114509 is a prime.

It is a super-2 number, since 2×1616625115021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616625115321) 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, 234855 + ... + 1813396.

It is an arithmetic number, because the mean of its divisors is an integer number (117979315200).

Almost surely, 2^{1616625115021} is an apocalyptic number.

It is an amenable number.

1616625115021 is a deficient number, since it is larger than the sum of its proper divisors (271043928179).

1616625115021 is a wasteful number, since it uses less digits than its factorization.

1616625115021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050704.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 1616625115021 in words is "one trillion, six hundred sixteen billion, six hundred twenty-five million, one hundred fifteen thousand, twenty-one".