100505127243 has 16 divisors (see below), whose sum is σ = 140413464576. Its totient is φ = 63824280960.

The previous prime is 100505127227. The next prime is 100505127251. The reversal of 100505127243 is 342721505001.

It is not a de Polignac number, because 100505127243 - 2⁴ = 100505127227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100505127243.

It is not an unprimeable number, because it can be changed into a prime (100505127293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3005355 + ... + 3038612.

It is an arithmetic number, because the mean of its divisors is an integer number (8775841536).

Almost surely, 2^100505127243 is an apocalyptic number.

100505127243 is a deficient number, since it is larger than the sum of its proper divisors (39908337333).

100505127243 is a wasteful number, since it uses less digits than its factorization.

100505127243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044234.

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 100505127243 in words is "one hundred billion, five hundred five million, one hundred twenty-seven thousand, two hundred forty-three".