10118128465 has 4 divisors (see below), whose sum is σ = 12141754164. Its totient is φ = 8094502768.

The previous prime is 10118128441. The next prime is 10118128469. The reversal of 10118128465 is 56482181101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56482181101 = 389 ⋅145198409.

It can be written as a sum of positive squares in 2 ways, for example, as 1071645696 + 9046482769 = 32736^2 + 95113^2 .

It is a cyclic number.

It is not a de Polignac number, because 10118128465 - 2⁷ = 10118128337 is a prime.

It is a super-3 number, since 3×10118128465³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10118128469) 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, 1011812842 + ... + 1011812851.

It is an arithmetic number, because the mean of its divisors is an integer number (3035438541).

Almost surely, 2^10118128465 is an apocalyptic number.

It is an amenable number.

10118128465 is a deficient number, since it is larger than the sum of its proper divisors (2023625699).

10118128465 is an equidigital number, since it uses as much as digits as its factorization.

10118128465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023625698.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 10118128465 in words is "ten billion, one hundred eighteen million, one hundred twenty-eight thousand, four hundred sixty-five".