10280585821 has 4 divisors (see below), whose sum is σ = 11215184544. Its totient is φ = 9345987100.

The previous prime is 10280585741. The next prime is 10280585857. The reversal of 10280585821 is 12858508201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10280585821 - 2²¹ = 10278488669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10280585621) 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, 467299345 + ... + 467299366.

It is an arithmetic number, because the mean of its divisors is an integer number (2803796136).

Almost surely, 2^10280585821 is an apocalyptic number.

10280585821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10280585821 is a deficient number, since it is larger than the sum of its proper divisors (934598723).

10280585821 is an equidigital number, since it uses as much as digits as its factorization.

10280585821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934598722.

The product of its (nonzero) digits is 51200, while the sum is 40.

The spelling of 10280585821 in words is "ten billion, two hundred eighty million, five hundred eighty-five thousand, eight hundred twenty-one".