1205731371364 has 81 divisors (see below), whose sum is σ = 2308050994977. Its totient is φ = 550891306368.

The previous prime is 1205731371353. The next prime is 1205731371457. The reversal of 1205731371364 is 4631731375021.

The square root of 1205731371364 is 1098058.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1068209065764 + 137522305600 = 1033542^2 + 370840^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1205731371364.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4482272622 + ... + 4482272890.

Almost surely, 2^{1205731371364} is an apocalyptic number.

1205731371364 is the 1098058-th square number.

It is an amenable number.

1205731371364 is a deficient number, since it is larger than the sum of its proper divisors (1102319623613).

1205731371364 is an equidigital number, since it uses as much as digits as its factorization.

1205731371364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 1205731371364 in words is "one trillion, two hundred five billion, seven hundred thirty-one million, three hundred seventy-one thousand, three hundred sixty-four".