105502413521 has 4 divisors (see below), whose sum is σ = 105505779312. Its totient is φ = 105499047732.

The previous prime is 105502413463. The next prime is 105502413551. The reversal of 105502413521 is 125314205501.

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: 125314205501 = 17 ⋅7371423853.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105502413521 is a prime.

It is a super-2 number, since 2×105502413521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105502413551) 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, 1635431 + ... + 1698716.

It is an arithmetic number, because the mean of its divisors is an integer number (26376444828).

Almost surely, 2^105502413521 is an apocalyptic number.

It is an amenable number.

105502413521 is a deficient number, since it is larger than the sum of its proper divisors (3365791).

105502413521 is an equidigital number, since it uses as much as digits as its factorization.

105502413521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365790.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 105502413521 in words is "one hundred five billion, five hundred two million, four hundred thirteen thousand, five hundred twenty-one".