61100610100 has 36 divisors (see below), whose sum is σ = 135090002124. Its totient is φ = 23979105280.

The previous prime is 61100610059. The next prime is 61100610119. The reversal of 61100610100 is 101600116.

It can be written as a sum of positive squares in 6 ways, for example, as 1414211236 + 59686398864 = 37606^2 + 244308^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5758909 + ... + 5769508.

It is an arithmetic number, because the mean of its divisors is an integer number (3752500059).

Almost surely, 2^61100610100 is an apocalyptic number.

It is an amenable number.

61100610100 is an abundant number, since it is smaller than the sum of its proper divisors (73989392024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61100610100 is a wasteful number, since it uses less digits than its factorization.

61100610100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11528484 (or 11528477 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 61100610100 in words is "sixty-one billion, one hundred million, six hundred ten thousand, one hundred".