11378102557 has 4 divisors (see below), whose sum is σ = 11976950080. Its totient is φ = 10779255036.

The previous prime is 11378102543. The next prime is 11378102563. The reversal of 11378102557 is 75520187311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75520187311 = 389 ⋅194139299.

It is a cyclic number.

It is not a de Polignac number, because 11378102557 - 2⁷ = 11378102429 is a prime.

It is a super-2 number, since 2×11378102557² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11378108557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299423733 + ... + 299423770.

It is an arithmetic number, because the mean of its divisors is an integer number (2994237520).

Almost surely, 2^11378102557 is an apocalyptic number.

It is an amenable number.

11378102557 is a deficient number, since it is larger than the sum of its proper divisors (598847523).

11378102557 is an equidigital number, since it uses as much as digits as its factorization.

11378102557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598847522.

The product of its (nonzero) digits is 58800, while the sum is 40.

Adding to 11378102557 its reverse (75520187311), we get a palindrome (86898289868).

The spelling of 11378102557 in words is "eleven billion, three hundred seventy-eight million, one hundred two thousand, five hundred fifty-seven".