69623372449 has 4 divisors (see below), whose sum is σ = 73718864964. Its totient is φ = 65527879936.

The previous prime is 69623372443. The next prime is 69623372503. The reversal of 69623372449 is 94427332696.

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 45328539025 + 24294833424 = 212905^2 + 155868^2 .

It is a cyclic number.

It is not a de Polignac number, because 69623372449 - 2⁷ = 69623372321 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 69623372449.

It is not an unprimeable number, because it can be changed into a prime (69623372443) 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, 2047746232 + ... + 2047746265.

It is an arithmetic number, because the mean of its divisors is an integer number (18429716241).

Almost surely, 2^69623372449 is an apocalyptic number.

It is an amenable number.

69623372449 is a deficient number, since it is larger than the sum of its proper divisors (4095492515).

69623372449 is a wasteful number, since it uses less digits than its factorization.

69623372449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095492514.

The product of its digits is 11757312, while the sum is 55.

The spelling of 69623372449 in words is "sixty-nine billion, six hundred twenty-three million, three hundred seventy-two thousand, four hundred forty-nine".