101655565100 has 72 divisors (see below), whose sum is σ = 232278466560. Its totient is φ = 38509542720.

The previous prime is 101655565079. The next prime is 101655565103. The reversal of 101655565100 is 1565556101.

It is not an unprimeable number, because it can be changed into a prime (101655565103) by changing a digit.

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, 7530557 + ... + 7544043.

Almost surely, 2^101655565100 is an apocalyptic number.

101655565100 is a gapful number since it is divisible by the number (10) 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 101655565100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116139233280).

101655565100 is an abundant number, since it is smaller than the sum of its proper divisors (130622901460).

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

101655565100 is a wasteful number, since it uses less digits than its factorization.

101655565100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487 (or 17480 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 101655565100 in words is "one hundred one billion, six hundred fifty-five million, five hundred sixty-five thousand, one hundred".