11605021064 has 32 divisors (see below), whose sum is σ = 26780819520. Its totient is φ = 4590997056.

The previous prime is 11605021063. The next prime is 11605021081. The reversal of 11605021064 is 46012050611.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (11605021063) 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, 7969754 + ... + 7971209.

It is an arithmetic number, because the mean of its divisors is an integer number (836900610).

Almost surely, 2^11605021064 is an apocalyptic number.

11605021064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11605021064 is an abundant number, since it is smaller than the sum of its proper divisors (15175798456).

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

11605021064 is a wasteful number, since it uses less digits than its factorization.

11605021064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15940989 (or 15940985 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 11605021064 its reverse (46012050611), we get a palindrome (57617071675).

The spelling of 11605021064 in words is "eleven billion, six hundred five million, twenty-one thousand, sixty-four".