100905536477 has 4 divisors (see below), whose sum is σ = 101126336796. Its totient is φ = 100684736160.

The previous prime is 100905536467. The next prime is 100905536483. The reversal of 100905536477 is 774635509001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66616126201 + 34289410276 = 258101^2 + 185174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100905536477 is a prime.

It is a super-2 number, since 2×100905536477² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100905536467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110399474 + ... + 110400387.

It is an arithmetic number, because the mean of its divisors is an integer number (25281584199).

Almost surely, 2^100905536477 is an apocalyptic number.

It is an amenable number.

100905536477 is a deficient number, since it is larger than the sum of its proper divisors (220800319).

100905536477 is an equidigital number, since it uses as much as digits as its factorization.

100905536477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220800318.

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 100905536477 in words is "one hundred billion, nine hundred five million, five hundred thirty-six thousand, four hundred seventy-seven".