10320517855 has 8 divisors (see below), whose sum is σ = 12719341152. Its totient is φ = 8033267808.

The previous prime is 10320517853. The next prime is 10320517871. The reversal of 10320517855 is 55871502301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10320517855 - 2¹ = 10320517853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10320517853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27893107 + ... + 27893476.

It is an arithmetic number, because the mean of its divisors is an integer number (1589917644).

Almost surely, 2^10320517855 is an apocalyptic number.

10320517855 is a deficient number, since it is larger than the sum of its proper divisors (2398823297).

10320517855 is an equidigital number, since it uses as much as digits as its factorization.

10320517855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55786625.

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 10320517855 in words is "ten billion, three hundred twenty million, five hundred seventeen thousand, eight hundred fifty-five".