11837671345 has 4 divisors (see below), whose sum is σ = 14205205620. Its totient is φ = 9470137072.

The previous prime is 11837671337. The next prime is 11837671361. The reversal of 11837671345 is 54317673811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54317673811 = 17 ⋅3195157283.

It can be written as a sum of positive squares in 2 ways, for example, as 2820459664 + 9017211681 = 53108^2 + 94959^2 .

It is a cyclic number.

It is not a de Polignac number, because 11837671345 - 2³ = 11837671337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11837671295 and 11837671304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183767130 + ... + 1183767139.

It is an arithmetic number, because the mean of its divisors is an integer number (3551301405).

Almost surely, 2^11837671345 is an apocalyptic number.

It is an amenable number.

11837671345 is a deficient number, since it is larger than the sum of its proper divisors (2367534275).

11837671345 is an equidigital number, since it uses as much as digits as its factorization.

11837671345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367534274.

The product of its digits is 423360, while the sum is 46.

The spelling of 11837671345 in words is "eleven billion, eight hundred thirty-seven million, six hundred seventy-one thousand, three hundred forty-five".