4161620655 has 24 divisors (see below), whose sum is σ = 7637799312. Its totient is φ = 2088969984.

The previous prime is 4161620653. The next prime is 4161620681. The reversal of 4161620655 is 5560261614.

It is not a de Polignac number, because 4161620655 - 2¹ = 4161620653 is a prime.

It is a super-2 number, since 2×4161620655² = 34638172952245258050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161620651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2719249 + ... + 2720778.

It is an arithmetic number, because the mean of its divisors is an integer number (318241638).

Almost surely, 2^4161620655 is an apocalyptic number.

4161620655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4161620655 is a deficient number, since it is larger than the sum of its proper divisors (3476178657).

4161620655 is a wasteful number, since it uses less digits than its factorization.

4161620655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440055 (or 5440052 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 4161620655 is about 64510.6243575428. The cubic root of 4161620655 is about 1608.4991291821.

The spelling of 4161620655 in words is "four billion, one hundred sixty-one million, six hundred twenty thousand, six hundred fifty-five".