10205323257 has 16 divisors (see below), whose sum is σ = 14186259648. Its totient is φ = 6519938880.

The previous prime is 10205323231. The next prime is 10205323267. The reversal of 10205323257 is 75232350201.

It is a happy number.

It is not a de Polignac number, because 10205323257 - 2⁷ = 10205323129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10205323267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739494 + ... + 753167.

It is an arithmetic number, because the mean of its divisors is an integer number (886641228).

Almost surely, 2^10205323257 is an apocalyptic number.

It is an amenable number.

10205323257 is a deficient number, since it is larger than the sum of its proper divisors (3980936391).

10205323257 is a wasteful number, since it uses less digits than its factorization.

10205323257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492760.

The product of its (nonzero) digits is 12600, while the sum is 30.

Adding to 10205323257 its reverse (75232350201), we get a palindrome (85437673458).

The spelling of 10205323257 in words is "ten billion, two hundred five million, three hundred twenty-three thousand, two hundred fifty-seven".