100120623156 has 120 divisors (see below), whose sum is σ = 280497127680. Its totient is φ = 31059661248.

The previous prime is 100120623131. The next prime is 100120623173. The reversal of 100120623156 is 651326021001.

100120623156 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 20 + 623 + 15 + 6 = 666.

It is a super-2 number, since 2×100120623156² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 94165 + ... + 457283.

It is an arithmetic number, because the mean of its divisors is an integer number (2337476064).

Almost surely, 2^100120623156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100120623156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140248563840).

100120623156 is an abundant number, since it is smaller than the sum of its proper divisors (180376504524).

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

100120623156 is a wasteful number, since it uses less digits than its factorization.

100120623156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363195 (or 363184 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 100120623156 its reverse (651326021001), we get a palindrome (751446644157).

The spelling of 100120623156 in words is "one hundred billion, one hundred twenty million, six hundred twenty-three thousand, one hundred fifty-six".