100544551640 has 64 divisors (see below), whose sum is σ = 243697053600. Its totient is φ = 37113495552.

The previous prime is 100544551573. The next prime is 100544551643. The reversal of 100544551640 is 46155445001.

It is a self number, because there is not a number n which added to its sum of digits gives 100544551640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100544551643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1918424 + ... + 1970136.

Almost surely, 2^100544551640 is an apocalyptic number.

100544551640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100544551640 is an abundant number, since it is smaller than the sum of its proper divisors (143152501960).

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

100544551640 is a wasteful number, since it uses less digits than its factorization.

100544551640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55476 (or 55472 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 100544551640 its reverse (46155445001), we get a palindrome (146699996641).

The spelling of 100544551640 in words is "one hundred billion, five hundred forty-four million, five hundred fifty-one thousand, six hundred forty".