11506379438 has 4 divisors (see below), whose sum is σ = 17259569160. Its totient is φ = 5753189718.

The previous prime is 11506379411. The next prime is 11506379453. The reversal of 11506379438 is 83497360511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83497360511 = 307 ⋅271978373.

It is a junction number, because it is equal to n+sod(n) for n = 11506379392 and 11506379401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2876594858 + ... + 2876594861.

It is an arithmetic number, because the mean of its divisors is an integer number (4314892290).

Almost surely, 2^11506379438 is an apocalyptic number.

11506379438 is a deficient number, since it is larger than the sum of its proper divisors (5753189722).

11506379438 is an equidigital number, since it uses as much as digits as its factorization.

11506379438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5753189721.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 11506379438 in words is "eleven billion, five hundred six million, three hundred seventy-nine thousand, four hundred thirty-eight".