100556212540 has 48 divisors (see below), whose sum is σ = 243549028800. Its totient is φ = 34160113152.

The previous prime is 100556212513. The next prime is 100556212577. The reversal of 100556212540 is 45212655001.

It is a super-2 number, since 2×100556212540² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3279505 + ... + 3310024.

It is an arithmetic number, because the mean of its divisors is an integer number (5073938100).

Almost surely, 2^100556212540 is an apocalyptic number.

100556212540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100556212540 is an abundant number, since it is smaller than the sum of its proper divisors (142992816260).

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

100556212540 is a wasteful number, since it uses less digits than its factorization.

100556212540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6589654 (or 6589652 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 100556212540 its reverse (45212655001), we get a palindrome (145768867541).

The spelling of 100556212540 in words is "one hundred billion, five hundred fifty-six million, two hundred twelve thousand, five hundred forty".