10269315778 has 4 divisors (see below), whose sum is σ = 15403973670. Its totient is φ = 5134657888.

The previous prime is 10269315761. The next prime is 10269315799. The reversal of 10269315778 is 87751396201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9630085689 + 639230089 = 98133^2 + 25283^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2567328943 + ... + 2567328946.

Almost surely, 2^10269315778 is an apocalyptic number.

10269315778 is a deficient number, since it is larger than the sum of its proper divisors (5134657892).

10269315778 is an equidigital number, since it uses as much as digits as its factorization.

10269315778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134657891.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 10269315778 in words is "ten billion, two hundred sixty-nine million, three hundred fifteen thousand, seven hundred seventy-eight".