61015510050 has 192 divisors, whose sum is σ = 178853266944. Its totient is φ = 13597516800.

The previous prime is 61015510021. The next prime is 61015510057. The reversal of 61015510050 is 5001551016.

It is a self number, because there is not a number n which added to its sum of digits gives 61015510050.

It is not an unprimeable number, because it can be changed into a prime (61015510057) 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 95 ways as a sum of consecutive naturals, for example, 1180857 + ... + 1231443.

It is an arithmetic number, because the mean of its divisors is an integer number (931527432).

Almost surely, 2^61015510050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61015510050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89426633472).

61015510050 is an abundant number, since it is smaller than the sum of its proper divisors (117837756894).

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

61015510050 is a wasteful number, since it uses less digits than its factorization.

61015510050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50673 (or 50668 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 61015510050 in words is "sixty-one billion, fifteen million, five hundred ten thousand, fifty".