2978422145956 has 48 divisors (see below), whose sum is σ = 5290659005632. Its totient is φ = 1466955878400.

The previous prime is 2978422145927. The next prime is 2978422146013. The reversal of 2978422145956 is 6595412248792.

It is a super-3 number, since 3×2978422145956³ (a number of 38 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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199258075 + ... + 199273021.

Almost surely, 2^{2978422145956} is an apocalyptic number.

It is an amenable number.

2978422145956 is a deficient number, since it is larger than the sum of its proper divisors (2312236859676).

2978422145956 is a wasteful number, since it uses less digits than its factorization.

2978422145956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17420 (or 17418 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 64.

The spelling of 2978422145956 in words is "two trillion, nine hundred seventy-eight billion, four hundred twenty-two million, one hundred forty-five thousand, nine hundred fifty-six".