100440821776 has 15 divisors (see below), whose sum is σ = 194606548383. Its totient is φ = 50219777040.

The previous prime is 100440821771. The next prime is 100440821809. The reversal of 100440821776 is 677128044001.

It is a happy number.

The square root of 100440821776 is 316924.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100440821771) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1228081 + ... + 1307311.

Almost surely, 2^100440821776 is an apocalyptic number.

100440821776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

100440821776 is the 316924-th square number.

It is an amenable number.

100440821776 is a deficient number, since it is larger than the sum of its proper divisors (94165726607).

100440821776 is an frugal number, since it uses more digits than its factorization.

100440821776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158470 (or 79233 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

Adding to 100440821776 its reverse (677128044001), we get a palindrome (777568865777).

The spelling of 100440821776 in words is "one hundred billion, four hundred forty million, eight hundred twenty-one thousand, seven hundred seventy-six".