42878516126511 has 8 divisors (see below), whose sum is σ = 61569151361200. Its totient is φ = 26386779154752.

The previous prime is 42878516126503. The next prime is 42878516126539. The reversal of 42878516126511 is 11562161587824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42878516126511 - 2³ = 42878516126503 is a prime.

It is a super-2 number, since 2×42878516126511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878516166511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549724565686 + ... + 549724565763.

It is an arithmetic number, because the mean of its divisors is an integer number (7696143920150).

Almost surely, 2^{42878516126511} is an apocalyptic number.

42878516126511 is a deficient number, since it is larger than the sum of its proper divisors (18690635234689).

42878516126511 is a wasteful number, since it uses less digits than its factorization.

42878516126511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099449131465.

The product of its digits is 6451200, while the sum is 57.

The spelling of 42878516126511 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred sixteen million, one hundred twenty-six thousand, five hundred eleven".