104145044621 has 4 divisors (see below), whose sum is σ = 104146092252. Its totient is φ = 104143996992.

The previous prime is 104145044609. The next prime is 104145044651. The reversal of 104145044621 is 126440541401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 50260707721 + 53884336900 = 224189^2 + 232130^2 .

It is a cyclic number.

It is not a de Polignac number, because 104145044621 - 2²⁶ = 104077935757 is a prime.

It is a super-2 number, since 2×104145044621² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104145044651) 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, 356990 + ... + 579423.

It is an arithmetic number, because the mean of its divisors is an integer number (26036523063).

Almost surely, 2^104145044621 is an apocalyptic number.

It is an amenable number.

104145044621 is a deficient number, since it is larger than the sum of its proper divisors (1047631).

104145044621 is an equidigital number, since it uses as much as digits as its factorization.

104145044621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047630.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 104145044621 in words is "one hundred four billion, one hundred forty-five million, forty-four thousand, six hundred twenty-one".