42878275251211 has 4 divisors (see below), whose sum is σ = 44356836466800. Its totient is φ = 41399714035624.

The previous prime is 42878275251197. The next prime is 42878275251257. The reversal of 42878275251211 is 11215257287824.

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

It is not a de Polignac number, because 42878275251211 - 2⁷ = 42878275251083 is a prime.

It is a super-2 number, since 2×42878275251211² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42878275251271) 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, 739280607751 + ... + 739280607808.

It is an arithmetic number, because the mean of its divisors is an integer number (11089209116700).

Almost surely, 2^{42878275251211} is an apocalyptic number.

42878275251211 is a deficient number, since it is larger than the sum of its proper divisors (1478561215589).

42878275251211 is a wasteful number, since it uses less digits than its factorization.

42878275251211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478561215588.

The product of its digits is 5017600, while the sum is 55.

The spelling of 42878275251211 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-five million, two hundred fifty-one thousand, two hundred eleven".