3986451096978 has 64 divisors (see below), whose sum is σ = 9325748551680. Its totient is φ = 1112264600832.

The previous prime is 3986451096961. The next prime is 3986451097003. The reversal of 3986451096978 is 8796901546893.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8470383 + ... + 8928621.

It is an arithmetic number, because the mean of its divisors is an integer number (145714821120).

Almost surely, 2^{3986451096978} is an apocalyptic number.

3986451096978 is an abundant number, since it is smaller than the sum of its proper divisors (5339297454702).

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

3986451096978 is a wasteful number, since it uses less digits than its factorization.

3986451096978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463111.

The product of its (nonzero) digits is 705438720, while the sum is 75.

The spelling of 3986451096978 in words is "three trillion, nine hundred eighty-six billion, four hundred fifty-one million, ninety-six thousand, nine hundred seventy-eight".