10620454644 has 60 divisors (see below), whose sum is σ = 27782846784. Its totient is φ = 3537744336.

The previous prime is 10620454619. The next prime is 10620454667. The reversal of 10620454644 is 44645402601.

10620454644 is a `hidden beast` number, since 1 + 0 + 6 + 2 + 0 + 4 + 5 + 4 + 644 = 666.

10620454644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10620454644² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 10620454599 and 10620454608.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 502539 + ... + 523245.

Almost surely, 2^10620454644 is an apocalyptic number.

It is an amenable number.

10620454644 is an abundant number, since it is smaller than the sum of its proper divisors (17162392140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10620454644 is a wasteful number, since it uses less digits than its factorization.

10620454644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22306 (or 22295 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 10620454644 in words is "ten billion, six hundred twenty million, four hundred fifty-four thousand, six hundred forty-four".