42877982387 has 4 divisors (see below), whose sum is σ = 43359757560. Its totient is φ = 42396207216.

The previous prime is 42877982341. The next prime is 42877982417. The reversal of 42877982387 is 78328977824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42877982387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42877982087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240887453 + ... + 240887630.

It is an arithmetic number, because the mean of its divisors is an integer number (10839939390).

Almost surely, 2^42877982387 is an apocalyptic number.

42877982387 is a deficient number, since it is larger than the sum of its proper divisors (481775173).

42877982387 is an equidigital number, since it uses as much as digits as its factorization.

42877982387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481775172.

The product of its digits is 75866112, while the sum is 65.

The spelling of 42877982387 in words is "forty-two billion, eight hundred seventy-seven million, nine hundred eighty-two thousand, three hundred eighty-seven".