69992240513 has 8 divisors (see below), whose sum is σ = 75407172456. Its totient is φ = 64581724800.

The previous prime is 69992240491. The next prime is 69992240533. The reversal of 69992240513 is 31504229996.

69992240513 = 187072² + 187073².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 387026929 + 69605213584 = 19673^2 + 263828^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69992240513 - 2⁸ = 69992240257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69992240533) by changing a digit.

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, 1071098 + ... + 1134563.

It is an arithmetic number, because the mean of its divisors is an integer number (9425896557).

Almost surely, 2^69992240513 is an apocalyptic number.

69992240513 is the 187073-rd centered square number.

It is an amenable number.

69992240513 is a deficient number, since it is larger than the sum of its proper divisors (5414931943).

69992240513 is a wasteful number, since it uses less digits than its factorization.

69992240513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208115.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 69992240513 in words is "sixty-nine billion, nine hundred ninety-two million, two hundred forty thousand, five hundred thirteen".