61055055164 has 24 divisors (see below), whose sum is σ = 112737046800. Its totient is φ = 28852104960.

The previous prime is 61055055163. The next prime is 61055055181. The reversal of 61055055164 is 46155055016.

It is a happy number.

It is a super-2 number, since 2×61055055164² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055055163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922109 + ... + 986100.

It is an arithmetic number, because the mean of its divisors is an integer number (4697376950).

Almost surely, 2^61055055164 is an apocalyptic number.

It is an amenable number.

61055055164 is a deficient number, since it is larger than the sum of its proper divisors (51681991636).

61055055164 is a wasteful number, since it uses less digits than its factorization.

61055055164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908653 (or 1908651 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 61055055164 in words is "sixty-one billion, fifty-five million, fifty-five thousand, one hundred sixty-four".