69436872428641 has 3 divisors (see below), whose sum is σ = 69436880761521. Its totient is φ = 69436864095762.

The previous prime is 69436872428611. The next prime is 69436872428647. The reversal of 69436872428641 is 14682427863496.

The square root of 69436872428641 is 8332879.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 69436872428641 - 2²⁷ = 69436738210913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69436872428647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4166440 + ... + 12499318.

It is an arithmetic number, because the mean of its divisors is an integer number (23145626920507).

Almost surely, 2^{69436872428641} is an apocalyptic number.

69436872428641 is the 8332879-th square number.

69436872428641 is the 4166440-th centered octagonal number.

It is an amenable number.

69436872428641 is a deficient number, since it is larger than the sum of its proper divisors (8332880).

69436872428641 is an frugal number, since it uses more digits than its factorization.

69436872428641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16665758 (or 8332879 counting only the distinct ones).

The product of its digits is 668860416, while the sum is 70.

The spelling of 69436872428641 in words is "sixty-nine trillion, four hundred thirty-six billion, eight hundred seventy-two million, four hundred twenty-eight thousand, six hundred forty-one".