61389321300 has 54 divisors (see below), whose sum is σ = 192421419918. Its totient is φ = 16370485440.

The previous prime is 61389321277. The next prime is 61389321307. The reversal of 61389321300 is 312398316.

61389321300 is a `hidden beast` number, since 61 + 389 + 3 + 213 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 12057357636 + 49331963664 = 109806^2 + 222108^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61389321307) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 34104279 + ... + 34106078.

Almost surely, 2^61389321300 is an apocalyptic number.

61389321300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61389321300 is an abundant number, since it is smaller than the sum of its proper divisors (131032098618).

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

61389321300 is a wasteful number, since it uses less digits than its factorization.

61389321300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68210377 (or 68210367 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 61389321300 in words is "sixty-one billion, three hundred eighty-nine million, three hundred twenty-one thousand, three hundred".