69819371945 has 4 divisors (see below), whose sum is σ = 83783246340. Its totient is φ = 55855497552.

The previous prime is 69819371789. The next prime is 69819371983. The reversal of 69819371945 is 54917391896.

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 7233842704 + 62585529241 = 85052^2 + 250171^2 .

It is a cyclic number.

It is not a de Polignac number, because 69819371945 - 2¹⁶ = 69819306409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6981937190 + ... + 6981937199.

It is an arithmetic number, because the mean of its divisors is an integer number (20945811585).

Almost surely, 2^69819371945 is an apocalyptic number.

It is an amenable number.

69819371945 is a deficient number, since it is larger than the sum of its proper divisors (13963874395).

69819371945 is a wasteful number, since it uses less digits than its factorization.

69819371945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13963874394.

The product of its digits is 14696640, while the sum is 62.

The spelling of 69819371945 in words is "sixty-nine billion, eight hundred nineteen million, three hundred seventy-one thousand, nine hundred forty-five".