42978040836 has 12 divisors (see below), whose sum is σ = 100282095312. Its totient is φ = 14326013608.

The previous prime is 42978040801. The next prime is 42978040841. The reversal of 42978040836 is 63804087924.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×42978040836³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790751690 + ... + 1790751713.

It is an arithmetic number, because the mean of its divisors is an integer number (8356841276).

Almost surely, 2^42978040836 is an apocalyptic number.

It is an amenable number.

42978040836 is an abundant number, since it is smaller than the sum of its proper divisors (57304054476).

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

42978040836 is a wasteful number, since it uses less digits than its factorization.

42978040836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581503410 (or 3581503408 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 42978040836 in words is "forty-two billion, nine hundred seventy-eight million, forty thousand, eight hundred thirty-six".