61800606697984 has 160 divisors (see below), whose sum is σ = 154894218564096. Its totient is φ = 23930437201920.

The previous prime is 61800606697943. The next prime is 61800606697997. The reversal of 61800606697984 is 48979660600816.

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 15 ways as a sum of consecutive naturals, for example, 1617559 + ... + 11234665.

Almost surely, 2^{61800606697984} is an apocalyptic number.

61800606697984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61800606697984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77447109282048).

61800606697984 is an abundant number, since it is smaller than the sum of its proper divisors (93093611866112).

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

61800606697984 is a wasteful number, since it uses less digits than its factorization.

61800606697984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617306 (or 9617290 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 70.

The spelling of 61800606697984 in words is "sixty-one trillion, eight hundred billion, six hundred six million, six hundred ninety-seven thousand, nine hundred eighty-four".