42878766276413 has 4 divisors (see below), whose sum is σ = 44743060462368. Its totient is φ = 41014472090460.

The previous prime is 42878766276361. The next prime is 42878766276497. The reversal of 42878766276413 is 31467266787824.

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 42878766276413 - 2²⁸ = 42878497840957 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 (42878736276413) 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, 932147092943 + ... + 932147092988.

It is an arithmetic number, because the mean of its divisors is an integer number (11185765115592).

Almost surely, 2^{42878766276413} is an apocalyptic number.

It is an amenable number.

42878766276413 is a deficient number, since it is larger than the sum of its proper divisors (1864294185955).

42878766276413 is a wasteful number, since it uses less digits than its factorization.

42878766276413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864294185954.

The product of its digits is 910393344, while the sum is 71.

The spelling of 42878766276413 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred sixty-six million, two hundred seventy-six thousand, four hundred thirteen".