100045949521 has 4 divisors (see below), whose sum is σ = 114338228032. Its totient is φ = 85753671012.

The previous prime is 100045949519. The next prime is 100045949533. The reversal of 100045949521 is 125949540001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 125949540001 = 205951 ⋅611551.

It is a cyclic number.

It is not a de Polignac number, because 100045949521 - 2¹ = 100045949519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100045949561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7146139245 + ... + 7146139258.

It is an arithmetic number, because the mean of its divisors is an integer number (28584557008).

Almost surely, 2^100045949521 is an apocalyptic number.

It is an amenable number.

100045949521 is a deficient number, since it is larger than the sum of its proper divisors (14292278511).

100045949521 is an equidigital number, since it uses as much as digits as its factorization.

100045949521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14292278510.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 100045949521 in words is "one hundred billion, forty-five million, nine hundred forty-nine thousand, five hundred twenty-one".