42771878136 has 48 divisors (see below), whose sum is σ = 124751313960. Its totient is φ = 13160577600.

The previous prime is 42771878129. The next prime is 42771878173. The reversal of 42771878136 is 63187817724.

42771878136 is a `hidden beast` number, since 427 + 7 + 1 + 87 + 8 + 136 = 666.

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 11 ways as a sum of consecutive naturals, for example, 22847290 + ... + 22849161.

Almost surely, 2^42771878136 is an apocalyptic number.

It is an amenable number.

42771878136 is an abundant number, since it is smaller than the sum of its proper divisors (81979435824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42771878136 is a wasteful number, since it uses less digits than its factorization.

42771878136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45696476 (or 45696469 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The spelling of 42771878136 in words is "forty-two billion, seven hundred seventy-one million, eight hundred seventy-eight thousand, one hundred thirty-six".