61050505100 has 72 divisors (see below), whose sum is σ = 142745217888. Its totient is φ = 22529894400.

The previous prime is 61050505067. The next prime is 61050505121. The reversal of 61050505100 is 150505016.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2694017 + ... + 2716583.

Almost surely, 2^61050505100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61050505100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71372608944).

61050505100 is an abundant number, since it is smaller than the sum of its proper divisors (81694712788).

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

61050505100 is a wasteful number, since it uses less digits than its factorization.

61050505100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24675 (or 24668 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 61050505100 in words is "sixty-one billion, fifty million, five hundred five thousand, one hundred".