42646288164479 has 4 divisors (see below), whose sum is σ = 44890829646840. Its totient is φ = 40401746682120.

The previous prime is 42646288164449. The next prime is 42646288164569. The reversal of 42646288164479 is 97446188264624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42646288164479 - 2³⁶ = 42577568687743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42646288164409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122270741152 + ... + 1122270741189.

It is an arithmetic number, because the mean of its divisors is an integer number (11222707411710).

Almost surely, 2^{42646288164479} is an apocalyptic number.

42646288164479 is a deficient number, since it is larger than the sum of its proper divisors (2244541482361).

42646288164479 is a wasteful number, since it uses less digits than its factorization.

42646288164479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244541482360.

The product of its digits is 891813888, while the sum is 71.

The spelling of 42646288164479 in words is "forty-two trillion, six hundred forty-six billion, two hundred eighty-eight million, one hundred sixty-four thousand, four hundred seventy-nine".