11621705105 has 8 divisors (see below), whose sum is σ = 13948540200. Its totient is φ = 9295701376.

The previous prime is 11621705099. The next prime is 11621705107. The reversal of 11621705105 is 50150712611.

It can be written as a sum of positive squares in 4 ways, for example, as 1612102801 + 10009602304 = 40151^2 + 100048^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11621705105 - 2¹² = 11621701009 is a prime.

It is a super-2 number, since 2×11621705105² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11621705107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176660 + ... + 233349.

It is an arithmetic number, because the mean of its divisors is an integer number (1743567525).

Almost surely, 2^11621705105 is an apocalyptic number.

It is an amenable number.

11621705105 is a deficient number, since it is larger than the sum of its proper divisors (2326835095).

11621705105 is an equidigital number, since it uses as much as digits as its factorization.

11621705105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415683.

The product of its (nonzero) digits is 2100, while the sum is 29.

The spelling of 11621705105 in words is "eleven billion, six hundred twenty-one million, seven hundred five thousand, one hundred five".