42664261827 has 16 divisors (see below), whose sum is σ = 62223499008. Its totient is φ = 25787798880.

The previous prime is 42664261811. The next prime is 42664261831. The reversal of 42664261827 is 72816246624.

It is not a de Polignac number, because 42664261827 - 2⁴ = 42664261811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42664261867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720743 + ... + 1745360.

It is an arithmetic number, because the mean of its divisors is an integer number (3888968688).

Almost surely, 2^42664261827 is an apocalyptic number.

42664261827 is a deficient number, since it is larger than the sum of its proper divisors (19559237181).

42664261827 is a wasteful number, since it uses less digits than its factorization.

42664261827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466490.

The product of its digits is 1548288, while the sum is 48.

The spelling of 42664261827 in words is "forty-two billion, six hundred sixty-four million, two hundred sixty-one thousand, eight hundred twenty-seven".