10671220781 has 16 divisors (see below), whose sum is σ = 12100683840. Its totient is φ = 9329022720.

The previous prime is 10671220771. The next prime is 10671220787. The reversal of 10671220781 is 18702217601.

10671220781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10671220781 - 2¹⁸ = 10670958637 is a prime.

It is a super-2 number, since 2×10671220781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10671220787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1328066 + ... + 1336076.

It is an arithmetic number, because the mean of its divisors is an integer number (756292740).

Almost surely, 2^10671220781 is an apocalyptic number.

It is an amenable number.

10671220781 is a deficient number, since it is larger than the sum of its proper divisors (1429463059).

10671220781 is a wasteful number, since it uses less digits than its factorization.

10671220781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436.

The product of its (nonzero) digits is 9408, while the sum is 35.

The spelling of 10671220781 in words is "ten billion, six hundred seventy-one million, two hundred twenty thousand, seven hundred eighty-one".