100473662721 has 4 divisors (see below), whose sum is σ = 133964883632. Its totient is φ = 66982441812.

The previous prime is 100473662719. The next prime is 100473662753. The reversal of 100473662721 is 127266374001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 100473662721 - 2¹ = 100473662719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100473662721.

It is not an unprimeable number, because it can be changed into a prime (100473662761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16745610451 + ... + 16745610456.

It is an arithmetic number, because the mean of its divisors is an integer number (33491220908).

Almost surely, 2^100473662721 is an apocalyptic number.

It is an amenable number.

100473662721 is a deficient number, since it is larger than the sum of its proper divisors (33491220911).

100473662721 is an equidigital number, since it uses as much as digits as its factorization.

100473662721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33491220910.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 100473662721 in words is "one hundred billion, four hundred seventy-three million, six hundred sixty-two thousand, seven hundred twenty-one".