616921229133 has 12 divisors (see below), whose sum is σ = 972118300608. Its totient is φ = 373891653960.

The previous prime is 616921229131. The next prime is 616921229189. The reversal of 616921229133 is 331922129616.

616921229133 is a `hidden beast` number, since 61 + 69 + 212 + 291 + 33 = 666.

It is not a de Polignac number, because 616921229133 - 2¹ = 616921229131 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616921229131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3115763685 + ... + 3115763882.

It is an arithmetic number, because the mean of its divisors is an integer number (81009858384).

Almost surely, 2^616921229133 is an apocalyptic number.

It is an amenable number.

616921229133 is a deficient number, since it is larger than the sum of its proper divisors (355197071475).

616921229133 is a wasteful number, since it uses less digits than its factorization.

616921229133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231527584 (or 6231527581 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The spelling of 616921229133 in words is "six hundred sixteen billion, nine hundred twenty-one million, two hundred twenty-nine thousand, one hundred thirty-three".