10628637881 has 4 divisors (see below), whose sum is σ = 11253851892. Its totient is φ = 10003423872.

The previous prime is 10628637869. The next prime is 10628637883. The reversal of 10628637881 is 18873682601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18873682601 = 31 ⋅608828471.

It can be written as a sum of positive squares in 2 ways, for example, as 8354874025 + 2273763856 = 91405^2 + 47684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10628637881 is a prime.

It is a super-2 number, since 2×10628637881² (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 (10628637883) 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, 312606980 + ... + 312607013.

It is an arithmetic number, because the mean of its divisors is an integer number (2813462973).

Almost surely, 2^10628637881 is an apocalyptic number.

It is an amenable number.

10628637881 is a deficient number, since it is larger than the sum of its proper divisors (625214011).

10628637881 is an equidigital number, since it uses as much as digits as its factorization.

10628637881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625214010.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 10628637881 in words is "ten billion, six hundred twenty-eight million, six hundred thirty-seven thousand, eight hundred eighty-one".