100561042136 has 32 divisors (see below), whose sum is σ = 191026728000. Its totient is φ = 49621168896.

The previous prime is 100561042121. The next prime is 100561042139. The reversal of 100561042136 is 631240165001.

It is a happy number.

It is a super-2 number, since 2×100561042136² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100561042099 and 100561042108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100561042139) 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 7 ways as a sum of consecutive naturals, for example, 1378220 + ... + 1449348.

It is an arithmetic number, because the mean of its divisors is an integer number (5969585250).

Almost surely, 2^100561042136 is an apocalyptic number.

It is an amenable number.

100561042136 is a deficient number, since it is larger than the sum of its proper divisors (90465685864).

100561042136 is a wasteful number, since it uses less digits than its factorization.

100561042136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73451 (or 73447 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 100561042136 in words is "one hundred billion, five hundred sixty-one million, forty-two thousand, one hundred thirty-six".