42878514420709 has 32 divisors (see below), whose sum is σ = 50648648122368. Its totient is φ = 35893984368000.

The previous prime is 42878514420697. The next prime is 42878514420743. The reversal of 42878514420709 is 90702441587824.

It is not a de Polignac number, because 42878514420709 - 2¹⁵ = 42878514387941 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 (42878514420769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12813784 + ... + 15809809.

It is an arithmetic number, because the mean of its divisors is an integer number (1582770253824).

Almost surely, 2^{42878514420709} is an apocalyptic number.

It is an amenable number.

42878514420709 is a deficient number, since it is larger than the sum of its proper divisors (7770133701659).

42878514420709 is a wasteful number, since it uses less digits than its factorization.

42878514420709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28623849.

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 42878514420709 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred fourteen million, four hundred twenty thousand, seven hundred nine".