61105000000028 has 24 divisors (see below), whose sum is σ = 111640295239200. Its totient is φ = 29209135926080.

The previous prime is 61105000000021. The next prime is 61105000000043. The reversal of 61105000000028 is 82000000050116.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61105000000021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170211863 + ... + 170570478.

It is an arithmetic number, because the mean of its divisors is an integer number (4651678968300).

Almost surely, 2^{61105000000028} is an apocalyptic number.

It is an amenable number.

61105000000028 is a deficient number, since it is larger than the sum of its proper divisors (50535295239172).

61105000000028 is a wasteful number, since it uses less digits than its factorization.

61105000000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340784317 (or 340784315 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The spelling of 61105000000028 in words is "sixty-one trillion, one hundred five billion, twenty-eight", and thus it is an aban number.