61549233294516 has 48 divisors (see below), whose sum is σ = 158134988551680. Its totient is φ = 18476971757920.

The previous prime is 61549233294503. The next prime is 61549233294517.

61549233294516 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 61549233294516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61549233294517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2178874056 + ... + 2178902303.

It is an arithmetic number, because the mean of its divisors is an integer number (3294478928160).

Almost surely, 2^{61549233294516} is an apocalyptic number.

61549233294516 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61549233294516 is an abundant number, since it is smaller than the sum of its proper divisors (96585755257164).

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

61549233294516 is a wasteful number, since it uses less digits than its factorization.

61549233294516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357776484 (or 4357776482 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 60.

The spelling of 61549233294516 in words is "sixty-one trillion, five hundred forty-nine billion, two hundred thirty-three million, two hundred ninety-four thousand, five hundred sixteen".