69940509242 has 16 divisors (see below), whose sum is σ = 109320566760. Its totient is φ = 33517924608.

The previous prime is 69940509203. The next prime is 69940509263. The reversal of 69940509242 is 24290504996.

It can be written as a sum of positive squares in 4 ways, for example, as 40159759201 + 29780750041 = 200399^2 + 172571^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4393043 + ... + 4408934.

Almost surely, 2^69940509242 is an apocalyptic number.

69940509242 is a deficient number, since it is larger than the sum of its proper divisors (39380057518).

69940509242 is a wasteful number, since it uses less digits than its factorization.

69940509242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802145.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 69940509242 in words is "sixty-nine billion, nine hundred forty million, five hundred nine thousand, two hundred forty-two".