42978463556 has 24 divisors (see below), whose sum is σ = 85997270016. Its totient is φ = 18410696640.

The previous prime is 42978463531. The next prime is 42978463559. The reversal of 42978463556 is 65536487924.

It is a super-3 number, since 3×42978463556³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42978463495 and 42978463504.

It is not an unprimeable number, because it can be changed into a prime (42978463559) 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, 299300 + ... + 418971.

It is an arithmetic number, because the mean of its divisors is an integer number (3583219584).

Almost surely, 2^42978463556 is an apocalyptic number.

It is an amenable number.

42978463556 is an abundant number, since it is smaller than the sum of its proper divisors (43018806460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42978463556 is a wasteful number, since it uses less digits than its factorization.

42978463556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720419 (or 720417 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 59.

The spelling of 42978463556 in words is "forty-two billion, nine hundred seventy-eight million, four hundred sixty-three thousand, five hundred fifty-six".