224781139969 has 4 divisors (see below), whose sum is σ = 224787062340. Its totient is φ = 224775217600.

The previous prime is 224781139963. The next prime is 224781139987. The reversal of 224781139969 is 969931187422.

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 57090889969 + 167690250000 = 238937^2 + 409500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224781139969 is a prime.

It is a super-2 number, since 2×224781139969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224781139963) 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, 2903884 + ... + 2980285.

It is an arithmetic number, because the mean of its divisors is an integer number (56196765585).

It is a Proth number, since it is equal to 6699 ⋅ 2²⁵ + 1 and 6699 < 2²⁵.

Almost surely, 2^224781139969 is an apocalyptic number.

It is an amenable number.

224781139969 is a deficient number, since it is larger than the sum of its proper divisors (5922371).

224781139969 is an equidigital number, since it uses as much as digits as its factorization.

224781139969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922370.

The product of its digits is 11757312, while the sum is 61.

The spelling of 224781139969 in words is "two hundred twenty-four billion, seven hundred eighty-one million, one hundred thirty-nine thousand, nine hundred sixty-nine".