42651881287 has 4 divisors (see below), whose sum is σ = 42652451016. Its totient is φ = 42651311560.

The previous prime is 42651881263. The next prime is 42651881303. The reversal of 42651881287 is 78218815624.

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

It is a cyclic number.

It is not a de Polignac number, because 42651881287 - 2³¹ = 40504397639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42651881257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151873 + ... + 329194.

It is an arithmetic number, because the mean of its divisors is an integer number (10663112754).

Almost surely, 2^42651881287 is an apocalyptic number.

42651881287 is a deficient number, since it is larger than the sum of its proper divisors (569729).

42651881287 is an equidigital number, since it uses as much as digits as its factorization.

42651881287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569728.

The product of its digits is 1720320, while the sum is 52.

The spelling of 42651881287 in words is "forty-two billion, six hundred fifty-one million, eight hundred eighty-one thousand, two hundred eighty-seven".