100555605551 has 2 divisors, whose sum is σ = 100555605552. Its totient is φ = 100555605550.

The previous prime is 100555605533. The next prime is 100555605569. The reversal of 100555605551 is 155506555001.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (100555605533) and next prime (100555605569).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100555605551 is a prime.

It is a super-2 number, since 2×100555605551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100555605571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50277802775 + 50277802776.

It is an arithmetic number, because the mean of its divisors is an integer number (50277802776).

Almost surely, 2^100555605551 is an apocalyptic number.

100555605551 is a deficient number, since it is larger than the sum of its proper divisors (1).

100555605551 is an equidigital number, since it uses as much as digits as its factorization.

100555605551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 100555605551 in words is "one hundred billion, five hundred fifty-five million, six hundred five thousand, five hundred fifty-one".