42477838155 has 80 divisors (see below), whose sum is σ = 77117752800. Its totient is φ = 22366886400.

The previous prime is 42477838111. The next prime is 42477838187. The reversal of 42477838155 is 55183877424.

42477838155 is a `hidden beast` number, since 42 + 477 + 8 + 3 + 81 + 55 = 666.

It is not a de Polignac number, because 42477838155 - 2⁷ = 42477838027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16728876 + ... + 16731414.

It is an arithmetic number, because the mean of its divisors is an integer number (963971910).

Almost surely, 2^42477838155 is an apocalyptic number.

42477838155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42477838155 is a deficient number, since it is larger than the sum of its proper divisors (34639914645).

42477838155 is a wasteful number, since it uses less digits than its factorization.

42477838155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066 (or 3057 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The spelling of 42477838155 in words is "forty-two billion, four hundred seventy-seven million, eight hundred thirty-eight thousand, one hundred fifty-five".