103644635560 has 32 divisors (see below), whose sum is σ = 233262642600. Its totient is φ = 41446794240.

The previous prime is 103644635543. The next prime is 103644635587. The reversal of 103644635560 is 65536446301.

It can be written as a sum of positive squares in 4 ways, for example, as 68165899396 + 35478736164 = 261086^2 + 188358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192981 + ... + 494500.

Almost surely, 2^103644635560 is an apocalyptic number.

103644635560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103644635560 is an abundant number, since it is smaller than the sum of its proper divisors (129618007040).

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

103644635560 is a wasteful number, since it uses less digits than its factorization.

103644635560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691261 (or 691257 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 103644635560 in words is "one hundred three billion, six hundred forty-four million, six hundred thirty-five thousand, five hundred sixty".