42878764222045 has 8 divisors (see below), whose sum is σ = 51460659472824. Its totient is φ = 34298916440064.

The previous prime is 42878764222013. The next prime is 42878764222097. The reversal of 42878764222045 is 54022246787824.

It can be written as a sum of positive squares in 4 ways, for example, as 4674819109689 + 38203945112356 = 2162133^2 + 6180934^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42878764222045 - 2⁵ = 42878764222013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511821124 + ... + 511904893.

It is an arithmetic number, because the mean of its divisors is an integer number (6432582434103).

Almost surely, 2^{42878764222045} is an apocalyptic number.

It is an amenable number.

42878764222045 is a deficient number, since it is larger than the sum of its proper divisors (8581895250779).

42878764222045 is a wasteful number, since it uses less digits than its factorization.

42878764222045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023734399.

The product of its (nonzero) digits is 96337920, while the sum is 61.

The spelling of 42878764222045 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred sixty-four million, two hundred twenty-two thousand, forty-five".