100815064266 has 192 divisors, whose sum is σ = 260819066880. Its totient is φ = 25352870400.

The previous prime is 100815064261. The next prime is 100815064267. The reversal of 100815064266 is 662460518001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100815064261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20360091 + ... + 20365041.

It is an arithmetic number, because the mean of its divisors is an integer number (1358432640).

Almost surely, 2^100815064266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100815064266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130409533440).

100815064266 is an abundant number, since it is smaller than the sum of its proper divisors (160004002614).

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

100815064266 is a wasteful number, since it uses less digits than its factorization.

100815064266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 100815064266 in words is "one hundred billion, eight hundred fifteen million, sixty-four thousand, two hundred sixty-six".