42878516315811 has 16 divisors (see below), whose sum is σ = 62695288977408. Its totient is φ = 25850922096800.

The previous prime is 42878516315783. The next prime is 42878516315827. The reversal of 42878516315811 is 11851361587824.

It is a cyclic number.

It is not a de Polignac number, because 42878516315811 - 2¹⁴ = 42878516299427 is a prime.

It is a super-2 number, since 2×42878516315811² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42878516315111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3401430816 + ... + 3401443421.

It is an arithmetic number, because the mean of its divisors is an integer number (3918455561088).

Almost surely, 2^{42878516315811} is an apocalyptic number.

42878516315811 is a deficient number, since it is larger than the sum of its proper divisors (19816772661597).

42878516315811 is a wasteful number, since it uses less digits than its factorization.

42878516315811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802874442.

The product of its digits is 12902400, while the sum is 60.

The spelling of 42878516315811 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred sixteen million, three hundred fifteen thousand, eight hundred eleven".