69816418949 has 4 divisors (see below), whose sum is σ = 69820407660. Its totient is φ = 69812430240.

The previous prime is 69816418943. The next prime is 69816419039. The reversal of 69816418949 is 94981461896.

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 43436812225 + 26379606724 = 208415^2 + 162418^2 .

It is a cyclic number.

It is not a de Polignac number, because 69816418949 - 2¹² = 69816414853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69816418943) 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, 1967984 + ... + 2003145.

It is an arithmetic number, because the mean of its divisors is an integer number (17455101915).

Almost surely, 2^69816418949 is an apocalyptic number.

It is an amenable number.

69816418949 is a deficient number, since it is larger than the sum of its proper divisors (3988711).

69816418949 is a wasteful number, since it uses less digits than its factorization.

69816418949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988710.

The product of its digits is 26873856, while the sum is 65.

The spelling of 69816418949 in words is "sixty-nine billion, eight hundred sixteen million, four hundred eighteen thousand, nine hundred forty-nine".