42187767685 has 32 divisors (see below), whose sum is σ = 58208274432. Its totient is φ = 28753670400.

The previous prime is 42187767679. The next prime is 42187767703. The reversal of 42187767685 is 58676778124.

It is not a de Polignac number, because 42187767685 - 2⁵ = 42187767653 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 8968044 + ... + 8972746.

It is an arithmetic number, because the mean of its divisors is an integer number (1819008576).

Almost surely, 2^42187767685 is an apocalyptic number.

It is an amenable number.

42187767685 is a deficient number, since it is larger than the sum of its proper divisors (16020506747).

42187767685 is a wasteful number, since it uses less digits than its factorization.

42187767685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213.

The product of its digits is 31610880, while the sum is 61.

The spelling of 42187767685 in words is "forty-two billion, one hundred eighty-seven million, seven hundred sixty-seven thousand, six hundred eighty-five".