42878276871377 has 4 divisors (see below), whose sum is σ = 45135028285680. Its totient is φ = 40621525457076.

The previous prime is 42878276871371. The next prime is 42878276871379. The reversal of 42878276871377 is 77317867287824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42878276871377 - 2¹⁶ = 42878276805841 is a prime.

It is a super-2 number, since 2×42878276871377² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42878276871298 and 42878276871307.

It is not an unprimeable number, because it can be changed into a prime (42878276871371) 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, 1128375707123 + ... + 1128375707160.

It is an arithmetic number, because the mean of its divisors is an integer number (11283757071420).

Almost surely, 2^{42878276871377} is an apocalyptic number.

It is an amenable number.

42878276871377 is a deficient number, since it is larger than the sum of its proper divisors (2256751414303).

42878276871377 is a wasteful number, since it uses less digits than its factorization.

42878276871377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256751414302.

The product of its digits is 2478292992, while the sum is 77.

The spelling of 42878276871377 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-six million, eight hundred seventy-one thousand, three hundred seventy-seven".