69638650856 has 16 divisors (see below), whose sum is σ = 130605863940. Its totient is φ = 34810420480.

The previous prime is 69638650849. The next prime is 69638650901. The reversal of 69638650856 is 65805683696.

It can be written as a sum of positive squares in 2 ways, for example, as 68976617956 + 662032900 = 262634^2 + 25730^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079825 + ... + 1142496.

Almost surely, 2^69638650856 is an apocalyptic number.

It is an amenable number.

69638650856 is a deficient number, since it is larger than the sum of its proper divisors (60967213084).

69638650856 is a wasteful number, since it uses less digits than its factorization.

69638650856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226244 (or 2226240 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 62.

The spelling of 69638650856 in words is "sixty-nine billion, six hundred thirty-eight million, six hundred fifty thousand, eight hundred fifty-six".