53213447369 has 16 divisors (see below), whose sum is σ = 55203731520. Its totient is φ = 51233757120.

The previous prime is 53213447359. The next prime is 53213447387. The reversal of 53213447369 is 96374431235.

It is a de Polignac number, because none of the positive numbers 2^k-53213447369 is a prime.

It is a super-2 number, since 2×53213447369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53213447359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21834419 + ... + 21836855.

It is an arithmetic number, because the mean of its divisors is an integer number (3450233220).

Almost surely, 2^53213447369 is an apocalyptic number.

It is an amenable number.

53213447369 is a deficient number, since it is larger than the sum of its proper divisors (1990284151).

53213447369 is a wasteful number, since it uses less digits than its factorization.

53213447369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280.

The product of its digits is 1632960, while the sum is 47.

The spelling of 53213447369 in words is "fifty-three billion, two hundred thirteen million, four hundred forty-seven thousand, three hundred sixty-nine".