130045105621 has 4 divisors (see below), whose sum is σ = 135699240672. Its totient is φ = 124390970572.

The previous prime is 130045105591. The next prime is 130045105639. The reversal of 130045105621 is 126501540031.

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: 126501540031 = 108223 ⋅1168897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130045105621 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 130045105621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130045105321) 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, 2827067491 + ... + 2827067536.

It is an arithmetic number, because the mean of its divisors is an integer number (33924810168).

Almost surely, 2^130045105621 is an apocalyptic number.

It is an amenable number.

130045105621 is a deficient number, since it is larger than the sum of its proper divisors (5654135051).

130045105621 is an equidigital number, since it uses as much as digits as its factorization.

130045105621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654135050.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 130045105621 its reverse (126501540031), we get a palindrome (256546645652).

The spelling of 130045105621 in words is "one hundred thirty billion, forty-five million, one hundred five thousand, six hundred twenty-one".