11912947916617 has 8 divisors (see below), whose sum is σ = 12996151863552. Its totient is φ = 10829778750000.

The previous prime is 11912947916591. The next prime is 11912947916621. The reversal of 11912947916617 is 71661974921911.

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 11912947916617 - 2³¹ = 11910800432969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11912947916647) 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, 7976313 + ... + 9351334.

It is an arithmetic number, because the mean of its divisors is an integer number (1624518982944).

Almost surely, 2^{11912947916617} is an apocalyptic number.

It is an amenable number.

11912947916617 is a deficient number, since it is larger than the sum of its proper divisors (1083203946935).

11912947916617 is a wasteful number, since it uses less digits than its factorization.

11912947916617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17390159.

The product of its digits is 10287648, while the sum is 64.

The spelling of 11912947916617 in words is "eleven trillion, nine hundred twelve billion, nine hundred forty-seven million, nine hundred sixteen thousand, six hundred seventeen".