66034788105 has 64 divisors (see below), whose sum is σ = 128131153920. Its totient is φ = 28600646400.

The previous prime is 66034788019. The next prime is 66034788107. The reversal of 66034788105 is 50188743066.

It is not a de Polignac number, because 66034788105 - 2⁸ = 66034787849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66034788107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 430045 + ... + 563034.

It is an arithmetic number, because the mean of its divisors is an integer number (2002049280).

Almost surely, 2^66034788105 is an apocalyptic number.

66034788105 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66034788105 is a deficient number, since it is larger than the sum of its proper divisors (62096365815).

66034788105 is a wasteful number, since it uses less digits than its factorization.

66034788105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993142.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 66034788105 in words is "sixty-six billion, thirty-four million, seven hundred eighty-eight thousand, one hundred five".