61040149170 has 1536 divisors, whose sum is σ = 238281523200. Its totient is φ = 9754214400.

The previous prime is 61040149129. The next prime is 61040149241. The reversal of 61040149170 is 7194104016.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 767 ways as a sum of consecutive naturals, for example, 1969037055 + ... + 1969037085.

It is an arithmetic number, because the mean of its divisors is an integer number (155131200).

Almost surely, 2^61040149170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61040149170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119140761600).

61040149170 is an abundant number, since it is smaller than the sum of its proper divisors (177241374030).

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

61040149170 is a wasteful number, since it uses less digits than its factorization.

61040149170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 61040149170 in words is "sixty-one billion, forty million, one hundred forty-nine thousand, one hundred seventy".