100812761280 has 336 divisors, whose sum is σ = 432317493504. Its totient is φ = 20948060160.

The previous prime is 100812761279. The next prime is 100812761299. The reversal of 100812761280 is 82167218001.

100812761280 is a `hidden beast` number, since 10 + 0 + 8 + 1 + 27 + 612 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 5542 + ... + 449061.

Almost surely, 2^100812761280 is an apocalyptic number.

100812761280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100812761280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216158746752).

100812761280 is an abundant number, since it is smaller than the sum of its proper divisors (331504732224).

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

100812761280 is a wasteful number, since it uses less digits than its factorization.

100812761280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454644 (or 454631 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

Adding to 100812761280 its reverse (82167218001), we get a palindrome (182979979281).

The spelling of 100812761280 in words is "one hundred billion, eight hundred twelve million, seven hundred sixty-one thousand, two hundred eighty".