1616422776221 has 16 divisors (see below), whose sum is σ = 1856243995200. Its totient is φ = 1392085900800.

The previous prime is 1616422776217. The next prime is 1616422776229. The reversal of 1616422776221 is 1226772246161.

It is a cyclic number.

It is not a de Polignac number, because 1616422776221 - 2² = 1616422776217 is a prime.

It is a super-2 number, since 2×1616422776221² (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 (1616422776229) 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, 6699245 + ... + 6936333.

It is an arithmetic number, because the mean of its divisors is an integer number (116015249700).

Almost surely, 2^{1616422776221} is an apocalyptic number.

1616422776221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1616422776221 is a deficient number, since it is larger than the sum of its proper divisors (239821218979).

1616422776221 is a wasteful number, since it uses less digits than its factorization.

1616422776221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269740.

The product of its digits is 677376, while the sum is 47.

The spelling of 1616422776221 in words is "one trillion, six hundred sixteen billion, four hundred twenty-two million, seven hundred seventy-six thousand, two hundred twenty-one".