1087563236769 has 9 divisors (see below), whose sum is σ = 1570929194419. Its totient is φ = 725040072120.

The previous prime is 1087563236729. The next prime is 1087563236789. The reversal of 1087563236769 is 9676323657801.

The square root of 1087563236769 is 1042863.

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

1087563236769 is a `hidden beast` number, since 1 + 0 + 8 + 7 + 563 + 2 + 3 + 6 + 7 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1035332705169 + 52230531600 = 1017513^2 + 228540^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1087563236769 - 2⁹ = 1087563236257 is a prime.

It is a super-2 number, since 2×1087563236769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087563236729) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2954779 + ... + 3302399.

Almost surely, 2^{1087563236769} is an apocalyptic number.

1087563236769 is the 1042863-rd square number.

1087563236769 is the 521432-nd centered octagonal number.

It is an amenable number.

1087563236769 is a deficient number, since it is larger than the sum of its proper divisors (483365957650).

1087563236769 is an frugal number, since it uses more digits than its factorization.

1087563236769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695248 (or 347624 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 1087563236769 in words is "one trillion, eighty-seven billion, five hundred sixty-three million, two hundred thirty-six thousand, seven hundred sixty-nine".