61605050616 has 96 divisors (see below), whose sum is σ = 171469949040. Its totient is φ = 19966777344.

The previous prime is 61605050597. The next prime is 61605050623.

61605050616 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×61605050616² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4513995 + ... + 4527621.

Almost surely, 2^61605050616 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 61605050616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85734974520).

61605050616 is an abundant number, since it is smaller than the sum of its proper divisors (109864898424).

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

61605050616 is a wasteful number, since it uses less digits than its factorization.

61605050616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15373 (or 15366 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

It can be divided in two parts, 616050 and 50616, that added together give a palindrome (666666).

The spelling of 61605050616 in words is "sixty-one billion, six hundred five million, fifty thousand, six hundred sixteen".