11387459469961 has 27 divisors (see below), whose sum is σ = 11664298238229. Its totient is φ = 11117162911392.

The previous prime is 11387459469943. The next prime is 11387459470097. The reversal of 11387459469961 is 16996495478311.

The square root of 11387459469961 is 3374531.

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 675873073225 + 10711586396736 = 822115^2 + 3272856^2 .

It is not a de Polignac number, because 11387459469961 - 2¹⁷ = 11387459338889 is a prime.

It is a super-2 number, since 2×11387459469961² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11387459466961) 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, 30529381771 + ... + 30529382143.

Almost surely, 2^{11387459469961} is an apocalyptic number.

11387459469961 is the 3374531-st square number.

11387459469961 is the 1687266-th centered octagonal number.

It is an amenable number.

11387459469961 is a deficient number, since it is larger than the sum of its proper divisors (276838768268).

11387459469961 is an frugal number, since it uses more digits than its factorization.

11387459469961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 565 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 73.

The spelling of 11387459469961 in words is "eleven trillion, three hundred eighty-seven billion, four hundred fifty-nine million, four hundred sixty-nine thousand, nine hundred sixty-one".