10206399844 has 24 divisors (see below), whose sum is σ = 17902350648. Its totient is φ = 5091459840.

The previous prime is 10206399839. The next prime is 10206399857. The reversal of 10206399844 is 44899360201.

It can be written as a sum of positive squares in 4 ways, for example, as 47775744 + 10158624100 = 6912^2 + 100790^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10206399794 and 10206399803.

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, 4739472 + ... + 4741624.

It is an arithmetic number, because the mean of its divisors is an integer number (745931277).

Almost surely, 2^10206399844 is an apocalyptic number.

It is an amenable number.

10206399844 is a deficient number, since it is larger than the sum of its proper divisors (7695950804).

10206399844 is a wasteful number, since it uses less digits than its factorization.

10206399844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4333 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 10206399844 in words is "ten billion, two hundred six million, three hundred ninety-nine thousand, eight hundred forty-four".