11771685423138 has 16 divisors (see below), whose sum is σ = 24928275013920. Its totient is φ = 3693077779776.

The previous prime is 11771685423097. The next prime is 11771685423143. The reversal of 11771685423138 is 83132458617711.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57704340208 + ... + 57704340411.

It is an arithmetic number, because the mean of its divisors is an integer number (1558017188370).

Almost surely, 2^{11771685423138} is an apocalyptic number.

11771685423138 is an abundant number, since it is smaller than the sum of its proper divisors (13156589590782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11771685423138 is a wasteful number, since it uses less digits than its factorization.

11771685423138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115408680641.

The product of its digits is 6773760, while the sum is 57.

The spelling of 11771685423138 in words is "eleven trillion, seven hundred seventy-one billion, six hundred eighty-five million, four hundred twenty-three thousand, one hundred thirty-eight".