100081273512 has 256 divisors, whose sum is σ = 304856524800. Its totient is φ = 26984448000.

The previous prime is 100081273507. The next prime is 100081273603. The reversal of 100081273512 is 215372180001.

It is a super-2 number, since 2×100081273512² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100081273512.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54658437 + ... + 54660267.

It is an arithmetic number, because the mean of its divisors is an integer number (1190845800).

Almost surely, 2^100081273512 is an apocalyptic number.

100081273512 is a gapful number since it is divisible by the number (12) 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 100081273512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152428262400).

100081273512 is an abundant number, since it is smaller than the sum of its proper divisors (204775251288).

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

100081273512 is a wasteful number, since it uses less digits than its factorization.

100081273512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 100081273512 in words is "one hundred billion, eighty-one million, two hundred seventy-three thousand, five hundred twelve".