61573098600 has 864 divisors, whose sum is σ = 242604081720. Its totient is φ = 13899755520.

The previous prime is 61573098593. The next prime is 61573098701. The reversal of 61573098600 is 689037516.

It is a happy number.

61573098600 is a `hidden beast` number, since 6 + 1 + 5 + 7 + 30 + 9 + 8 + 600 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 19886076324 + 41687022276 = 141018^2 + 204174^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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 215 ways as a sum of consecutive naturals, for example, 312553702 + ... + 312553898.

Almost surely, 2^61573098600 is an apocalyptic number.

61573098600 is a gapful number since it is divisible by the number (60) 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 61573098600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121302040860).

61573098600 is an abundant number, since it is smaller than the sum of its proper divisors (181030983120).

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

61573098600 is a wasteful number, since it uses less digits than its factorization.

61573098600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 61573098600 in words is "sixty-one billion, five hundred seventy-three million, ninety-eight thousand, six hundred".