42774308638 has 32 divisors (see below), whose sum is σ = 69391526400. Its totient is φ = 19712657664.

The previous prime is 42774308623. The next prime is 42774308641. The reversal of 42774308638 is 83680347724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119131 + ... + 315817.

It is an arithmetic number, because the mean of its divisors is an integer number (2168485200).

Almost surely, 2^42774308638 is an apocalyptic number.

42774308638 is a deficient number, since it is larger than the sum of its proper divisors (26617217762).

42774308638 is a wasteful number, since it uses less digits than its factorization.

42774308638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196864.

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 42774308638 in words is "forty-two billion, seven hundred seventy-four million, three hundred eight thousand, six hundred thirty-eight".