69637590439421 has 8 divisors (see below), whose sum is σ = 72046890363000. Its totient is φ = 67228824096000.

The previous prime is 69637590439399. The next prime is 69637590439427. The reversal of 69637590439421 is 12493409573696.

It can be written as a sum of positive squares in 4 ways, for example, as 186118039396 + 69451472400025 = 431414^2 + 8333755^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69637590439421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69637590439427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133129496 + ... + 133651553.

It is an arithmetic number, because the mean of its divisors is an integer number (9005861295375).

Almost surely, 2^{69637590439421} is an apocalyptic number.

It is an amenable number.

69637590439421 is a deficient number, since it is larger than the sum of its proper divisors (2409299923579).

69637590439421 is a wasteful number, since it uses less digits than its factorization.

69637590439421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266790079.

The product of its (nonzero) digits is 264539520, while the sum is 68.

The spelling of 69637590439421 in words is "sixty-nine trillion, six hundred thirty-seven billion, five hundred ninety million, four hundred thirty-nine thousand, four hundred twenty-one".