69897424361 has 4 divisors (see below), whose sum is σ = 69940545924. Its totient is φ = 69854302800.

The previous prime is 69897424357. The next prime is 69897424381. The reversal of 69897424361 is 16342479896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39424485136 + 30472939225 = 198556^2 + 174565^2 .

It is a cyclic number.

It is not a de Polignac number, because 69897424361 - 2² = 69897424357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69897424361.

It is not an unprimeable number, because it can be changed into a prime (69897424381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21558350 + ... + 21561591.

It is an arithmetic number, because the mean of its divisors is an integer number (17485136481).

Almost surely, 2^69897424361 is an apocalyptic number.

It is an amenable number.

69897424361 is a deficient number, since it is larger than the sum of its proper divisors (43121563).

69897424361 is a wasteful number, since it uses less digits than its factorization.

69897424361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43121562.

The product of its digits is 15676416, while the sum is 59.

The spelling of 69897424361 in words is "sixty-nine billion, eight hundred ninety-seven million, four hundred twenty-four thousand, three hundred sixty-one".