42978463558 has 4 divisors (see below), whose sum is σ = 64467695340. Its totient is φ = 21489231778.

The previous prime is 42978463531. The next prime is 42978463559. The reversal of 42978463558 is 85536487924.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42978463496 and 42978463505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42978463559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10744615888 + ... + 10744615891.

It is an arithmetic number, because the mean of its divisors is an integer number (16116923835).

Almost surely, 2^42978463558 is an apocalyptic number.

42978463558 is a deficient number, since it is larger than the sum of its proper divisors (21489231782).

42978463558 is a wasteful number, since it uses less digits than its factorization.

42978463558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21489231781.

The product of its digits is 58060800, while the sum is 61.

The spelling of 42978463558 in words is "forty-two billion, nine hundred seventy-eight million, four hundred sixty-three thousand, five hundred fifty-eight".