10508420161 has 4 divisors (see below), whose sum is σ = 10508840532. Its totient is φ = 10507999792.

The previous prime is 10508420147. The next prime is 10508420173. The reversal of 10508420161 is 16102480501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16102480501 = 43271 ⋅372131.

It can be written as a sum of positive squares in 2 ways, for example, as 316306225 + 10192113936 = 17785^2 + 100956^2 .

It is a cyclic number.

It is not a de Polignac number, because 10508420161 - 2⁷ = 10508420033 is a prime.

It is a super-2 number, since 2×10508420161² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10508420141) 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, 170146 + ... + 223531.

It is an arithmetic number, because the mean of its divisors is an integer number (2627210133).

Almost surely, 2^10508420161 is an apocalyptic number.

It is an amenable number.

10508420161 is a deficient number, since it is larger than the sum of its proper divisors (420371).

10508420161 is an equidigital number, since it uses as much as digits as its factorization.

10508420161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420370.

The product of its (nonzero) digits is 1920, while the sum is 28.

The spelling of 10508420161 in words is "ten billion, five hundred eight million, four hundred twenty thousand, one hundred sixty-one".