11555123370371 has 16 divisors (see below), whose sum is σ = 13787884061184. Its totient is φ = 9468361197504.

The previous prime is 11555123370317. The next prime is 11555123370379. The reversal of 11555123370371 is 17307332155511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11555123370371 - 2³⁰ = 11554049628547 is a prime.

It is a super-2 number, since 2×11555123370371² (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 (11555123370379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20188661 + ... + 20753126.

It is an arithmetic number, because the mean of its divisors is an integer number (861742753824).

Almost surely, 2^{11555123370371} is an apocalyptic number.

11555123370371 is a deficient number, since it is larger than the sum of its proper divisors (2232760690813).

11555123370371 is a wasteful number, since it uses less digits than its factorization.

11555123370371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40943570.

The product of its (nonzero) digits is 330750, while the sum is 44.

The spelling of 11555123370371 in words is "eleven trillion, five hundred fifty-five billion, one hundred twenty-three million, three hundred seventy thousand, three hundred seventy-one".