100858121280 has 168 divisors, whose sum is σ = 396468551232. Its totient is φ = 23053280256.

The previous prime is 100858121267. The next prime is 100858121291. The reversal of 100858121280 is 82121858001.

It is a tau number, because it is divible by the number of its divisors (168).

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 (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2481282 + ... + 2521601.

Almost surely, 2^100858121280 is an apocalyptic number.

100858121280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100858121280 is an abundant number, since it is smaller than the sum of its proper divisors (295610429952).

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

100858121280 is a wasteful number, since it uses less digits than its factorization.

100858121280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002913 (or 5002900 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

Adding to 100858121280 its reverse (82121858001), we get a palindrome (182979979281).

The spelling of 100858121280 in words is "one hundred billion, eight hundred fifty-eight million, one hundred twenty-one thousand, two hundred eighty".