100243053440 has 64 divisors (see below), whose sum is σ = 241392983760. Its totient is φ = 39804506112.

The previous prime is 100243053419. The next prime is 100243053457. The reversal of 100243053440 is 44350342001.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 483962 + ... + 659321.

Almost surely, 2^100243053440 is an apocalyptic number.

100243053440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100243053440 is an abundant number, since it is smaller than the sum of its proper divisors (141149930320).

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

100243053440 is a wasteful number, since it uses less digits than its factorization.

100243053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143439 (or 1143427 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 100243053440 its reverse (44350342001), we get a palindrome (144593395441).

The spelling of 100243053440 in words is "one hundred billion, two hundred forty-three million, fifty-three thousand, four hundred forty".