253043646356 has 6 divisors (see below), whose sum is σ = 442826381130. Its totient is φ = 126521823176.

The previous prime is 253043646319. The next prime is 253043646377. The reversal of 253043646356 is 653646340352.

It can be written as a sum of positive squares in only one way, i.e., 154771428100 + 98272218256 = 393410^2 + 313484^2 .

It is a super-2 number, since 2×253043646356² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253043646356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31630455791 + ... + 31630455798.

It is an arithmetic number, because the mean of its divisors is an integer number (73804396855).

Almost surely, 2^253043646356 is an apocalyptic number.

It is an amenable number.

253043646356 is a deficient number, since it is larger than the sum of its proper divisors (189782734774).

253043646356 is a wasteful number, since it uses less digits than its factorization.

253043646356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63260911593 (or 63260911591 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 47.

The spelling of 253043646356 in words is "two hundred fifty-three billion, forty-three million, six hundred forty-six thousand, three hundred fifty-six".