42877891764 has 18 divisors (see below), whose sum is σ = 108385782050. Its totient is φ = 14292630576.

The previous prime is 42877891753. The next prime is 42877891843. The reversal of 42877891764 is 46719877824.

42877891764 is a `hidden beast` number, since 428 + 77 + 89 + 1 + 7 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41266672164 + 1611219600 = 203142^2 + 40140^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595526239 + ... + 595526310.

Almost surely, 2^42877891764 is an apocalyptic number.

It is an amenable number.

42877891764 is an abundant number, since it is smaller than the sum of its proper divisors (65507890286).

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

42877891764 is a wasteful number, since it uses less digits than its factorization.

42877891764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191052559 (or 1191052554 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 42877891764 in words is "forty-two billion, eight hundred seventy-seven million, eight hundred ninety-one thousand, seven hundred sixty-four".