100155657066181 has 2 divisors, whose sum is σ = 100155657066182. Its totient is φ = 100155657066180.

The previous prime is 100155657066167. The next prime is 100155657066187. The reversal of 100155657066181 is 181660756551001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81725378763681 + 18430278302500 = 9040209^2 + 4293050^2 .

It is a cyclic number.

It is not a de Polignac number, because 100155657066181 - 2¹⁵ = 100155657033413 is a prime.

It is a super-2 number, since 2×100155657066181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100155657066187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50077828533090 + 50077828533091.

It is an arithmetic number, because the mean of its divisors is an integer number (50077828533091).

Almost surely, 2^{100155657066181} is an apocalyptic number.

It is an amenable number.

100155657066181 is a deficient number, since it is larger than the sum of its proper divisors (1).

100155657066181 is an equidigital number, since it uses as much as digits as its factorization.

100155657066181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000, while the sum is 52.

The spelling of 100155657066181 in words is "one hundred trillion, one hundred fifty-five billion, six hundred fifty-seven million, sixty-six thousand, one hundred eighty-one".