1099752813481 has 27 divisors (see below), whose sum is σ = 1315139371749. Its totient is φ = 916941852288.

The previous prime is 1099752813469. The next prime is 1099752813517. The reversal of 1099752813481 is 1843182579901.

The square root of 1099752813481 is 1048691.

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

It can be written as a sum of positive squares in 4 ways, for example, as 37855539225 + 1061897274256 = 194565^2 + 1030484^2 .

It is not a de Polignac number, because 1099752813481 - 2¹⁷ = 1099752682409 is a prime.

It is a super-2 number, since 2×1099752813481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1099752813281) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 271608945 + ... + 271612993.

Almost surely, 2^{1099752813481} is an apocalyptic number.

1099752813481 is the 1048691-st square number.

1099752813481 is the 524346-th centered octagonal number.

It is an amenable number.

1099752813481 is a deficient number, since it is larger than the sum of its proper divisors (215386558268).

1099752813481 is an frugal number, since it uses more digits than its factorization.

1099752813481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8186 (or 4093 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 58.

The spelling of 1099752813481 in words is "one trillion, ninety-nine billion, seven hundred fifty-two million, eight hundred thirteen thousand, four hundred eighty-one".