11947818139019 has 8 divisors (see below), whose sum is σ = 14457863966688. Its totient is φ = 9638575977600.

The previous prime is 11947818139007. The next prime is 11947818139043. The reversal of 11947818139019 is 91093181874911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11947818139019 - 2⁴ = 11947818139003 is a prime.

It is a super-2 number, since 2×11947818139019² (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 (11947818139619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50200916432 + ... + 50200916669.

It is an arithmetic number, because the mean of its divisors is an integer number (1807232995836).

Almost surely, 2^{11947818139019} is an apocalyptic number.

11947818139019 is a deficient number, since it is larger than the sum of its proper divisors (2510045827669).

11947818139019 is a wasteful number, since it uses less digits than its factorization.

11947818139019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100401833125.

The product of its (nonzero) digits is 3919104, while the sum is 62.

The spelling of 11947818139019 in words is "eleven trillion, nine hundred forty-seven billion, eight hundred eighteen million, one hundred thirty-nine thousand, nineteen".