101040043545 has 120 divisors (see below), whose sum is σ = 211426100424. Its totient is φ = 46029441024.

The previous prime is 101040043483. The next prime is 101040043553. The reversal of 101040043545 is 545340040101.

It is a happy number.

101040043545 is a `hidden beast` number, since 10 + 104 + 0 + 0 + 4 + 3 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10506455001 + 90533588544 = 102501^2 + 300888^2 .

It is not a de Polignac number, because 101040043545 - 2¹¹ = 101040041497 is a prime.

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

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 5805897 + ... + 5823273.

Almost surely, 2^101040043545 is an apocalyptic number.

101040043545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101040043545 is an abundant number, since it is smaller than the sum of its proper divisors (110386056879).

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

101040043545 is a wasteful number, since it uses less digits than its factorization.

101040043545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701 (or 17685 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 101040043545 its reverse (545340040101), we get a palindrome (646380083646).

The spelling of 101040043545 in words is "one hundred one billion, forty million, forty-three thousand, five hundred forty-five".