10856722591885 has 8 divisors (see below), whose sum is σ = 13047776746776. Its totient is φ = 8672238315840.

The previous prime is 10856722591879. The next prime is 10856722591919. The reversal of 10856722591885 is 58819522765801.

It can be written as a sum of positive squares in 4 ways, for example, as 3605733861129 + 7250988730756 = 1898877^2 + 2692766^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-10856722591885 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10856722591885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642466074 + ... + 1642472683.

It is an arithmetic number, because the mean of its divisors is an integer number (1630972093347).

Almost surely, 2^{10856722591885} is an apocalyptic number.

It is an amenable number.

10856722591885 is a deficient number, since it is larger than the sum of its proper divisors (2191054154891).

10856722591885 is an equidigital number, since it uses as much as digits as its factorization.

10856722591885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284939423.

The product of its (nonzero) digits is 96768000, while the sum is 67.

The spelling of 10856722591885 in words is "ten trillion, eight hundred fifty-six billion, seven hundred twenty-two million, five hundred ninety-one thousand, eight hundred eighty-five".