11554715057 has 6 divisors (see below), whose sum is σ = 12274386198. Its totient is φ = 10875025664.

The previous prime is 11554715017. The next prime is 11554715063. The reversal of 11554715057 is 75051745511.

It can be written as a sum of positive squares in 3 ways, for example, as 7631070736 + 3923644321 = 87356^2 + 62639^2 .

It is not a de Polignac number, because 11554715057 - 2¹⁶ = 11554649521 is a prime.

It is a super-2 number, since 2×11554715057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11554715017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19990568 + ... + 19991145.

It is an arithmetic number, because the mean of its divisors is an integer number (2045731033).

Almost surely, 2^11554715057 is an apocalyptic number.

11554715057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11554715057 is a deficient number, since it is larger than the sum of its proper divisors (719671141).

11554715057 is an equidigital number, since it uses as much as digits as its factorization.

11554715057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39981747 (or 39981730 counting only the distinct ones).

The product of its (nonzero) digits is 122500, while the sum is 41.

The spelling of 11554715057 in words is "eleven billion, five hundred fifty-four million, seven hundred fifteen thousand, fifty-seven".