100987549171 has 2 divisors, whose sum is σ = 100987549172. Its totient is φ = 100987549170.

The previous prime is 100987549087. The next prime is 100987549183. The reversal of 100987549171 is 171945789001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100987549171 - 2¹⁹ = 100987024883 is a prime.

It is not a weakly prime, because it can be changed into another prime (100987549771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50493774585 + 50493774586.

It is an arithmetic number, because the mean of its divisors is an integer number (50493774586).

Almost surely, 2^100987549171 is an apocalyptic number.

100987549171 is a deficient number, since it is larger than the sum of its proper divisors (1).

100987549171 is an equidigital number, since it uses as much as digits as its factorization.

100987549171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 52.

The spelling of 100987549171 in words is "one hundred billion, nine hundred eighty-seven million, five hundred forty-nine thousand, one hundred seventy-one".