11664978547371 has 16 divisors (see below), whose sum is σ = 15571436015520. Its totient is φ = 7767587266560.

The previous prime is 11664978547361. The next prime is 11664978547447. The reversal of 11664978547371 is 17374587946611.

It is not a de Polignac number, because 11664978547371 - 2⁶ = 11664978547307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11664978547296 and 11664978547305.

It is not an unprimeable number, because it can be changed into a prime (11664978547361) 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, 145348671 + ... + 145428903.

It is an arithmetic number, because the mean of its divisors is an integer number (973214750970).

Almost surely, 2^{11664978547371} is an apocalyptic number.

11664978547371 is a deficient number, since it is larger than the sum of its proper divisors (3906457468149).

11664978547371 is an equidigital number, since it uses as much as digits as its factorization.

11664978547371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136126.

The product of its digits is 213373440, while the sum is 69.

The spelling of 11664978547371 in words is "eleven trillion, six hundred sixty-four billion, nine hundred seventy-eight million, five hundred forty-seven thousand, three hundred seventy-one".