101066205520 has 40 divisors (see below), whose sum is σ = 268547347584. Its totient is φ = 34651270272.

The previous prime is 101066205517. The next prime is 101066205529. The reversal of 101066205520 is 25502660101.

101066205520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101066205529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90237124 + ... + 90238243.

Almost surely, 2^101066205520 is an apocalyptic number.

101066205520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101066205520 is an abundant number, since it is smaller than the sum of its proper divisors (167481142064).

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

101066205520 is a wasteful number, since it uses less digits than its factorization.

101066205520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180475387 (or 180475381 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 101066205520 its reverse (25502660101), we get a palindrome (126568865621).

The spelling of 101066205520 in words is "one hundred one billion, sixty-six million, two hundred five thousand, five hundred twenty".