11555142373 has 4 divisors (see below), whose sum is σ = 11605601740. Its totient is φ = 11504683008.

The previous prime is 11555142367. The next prime is 11555142413. The reversal of 11555142373 is 37324155511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37324155511 = 1163 ⋅32092997.

It can be written as a sum of positive squares in 2 ways, for example, as 8336055204 + 3219087169 = 91302^2 + 56737^2 .

It is a cyclic number.

It is not a de Polignac number, because 11555142373 - 2²¹ = 11553045221 is a prime.

It is a super-2 number, since 2×11555142373² (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 (11555142673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25229340 + ... + 25229797.

It is an arithmetic number, because the mean of its divisors is an integer number (2901400435).

Almost surely, 2^11555142373 is an apocalyptic number.

It is an amenable number.

11555142373 is a deficient number, since it is larger than the sum of its proper divisors (50459367).

11555142373 is an equidigital number, since it uses as much as digits as its factorization.

11555142373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50459366.

The product of its digits is 63000, while the sum is 37.

Adding to 11555142373 its reverse (37324155511), we get a palindrome (48879297884).

The spelling of 11555142373 in words is "eleven billion, five hundred fifty-five million, one hundred forty-two thousand, three hundred seventy-three".