69726974369 has 4 divisors (see below), whose sum is σ = 75090587796. Its totient is φ = 64363360944.

The previous prime is 69726974353. The next prime is 69726974371. The reversal of 69726974369 is 96347962796.

It is a happy number.

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 20137029025 + 49589945344 = 141905^2 + 222688^2 .

It is a cyclic number.

It is not a de Polignac number, because 69726974369 - 2⁴ = 69726974353 is a prime.

It is a super-2 number, since 2×69726974369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69726974299 and 69726974308.

It is not an unprimeable number, because it can be changed into a prime (69726974309) 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, 2681806694 + ... + 2681806719.

It is an arithmetic number, because the mean of its divisors is an integer number (18772646949).

Almost surely, 2^69726974369 is an apocalyptic number.

It is an amenable number.

69726974369 is a deficient number, since it is larger than the sum of its proper divisors (5363613427).

69726974369 is a wasteful number, since it uses less digits than its factorization.

69726974369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363613426.

The product of its digits is 185177664, while the sum is 68.

The spelling of 69726974369 in words is "sixty-nine billion, seven hundred twenty-six million, nine hundred seventy-four thousand, three hundred sixty-nine".