42646984637 has 16 divisors (see below), whose sum is σ = 44449870080. Its totient is φ = 40884652800.

The previous prime is 42646984619. The next prime is 42646984649. The reversal of 42646984637 is 73648964624.

It is a cyclic number.

It is not a de Polignac number, because 42646984637 - 2²⁶ = 42579875773 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 (42646984607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784814 + ... + 837392.

It is an arithmetic number, because the mean of its divisors is an integer number (2778116880).

Almost surely, 2^42646984637 is an apocalyptic number.

It is an amenable number.

42646984637 is a deficient number, since it is larger than the sum of its proper divisors (1802885443).

42646984637 is a wasteful number, since it uses less digits than its factorization.

42646984637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52964.

The product of its digits is 41803776, while the sum is 59.

The spelling of 42646984637 in words is "forty-two billion, six hundred forty-six million, nine hundred eighty-four thousand, six hundred thirty-seven".