6161622011505 has 24 divisors (see below), whose sum is σ = 10881656990568. Its totient is φ = 3224194661376.

The previous prime is 6161622011497. The next prime is 6161622011509. The reversal of 6161622011505 is 5051102261616.

6161622011505 is a `hidden beast` number, since 6 + 1 + 61 + 62 + 20 + 11 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 105489843264 + 6056132168241 = 324792^2 + 2460921^2 .

It is not a de Polignac number, because 6161622011505 - 2³ = 6161622011497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6161622011505.

It is not an unprimeable number, because it can be changed into a prime (6161622011509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1291742272 + ... + 1291747041.

It is an arithmetic number, because the mean of its divisors is an integer number (453402374607).

Almost surely, 2^{6161622011505} is an apocalyptic number.

It is an amenable number.

6161622011505 is a deficient number, since it is larger than the sum of its proper divisors (4720034979063).

6161622011505 is a wasteful number, since it uses less digits than its factorization.

6161622011505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583489377 (or 2583489374 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 6161622011505 in words is "six trillion, one hundred sixty-one billion, six hundred twenty-two million, eleven thousand, five hundred five".