2421809676978 has 32 divisors (see below), whose sum is σ = 4976570347584. Its totient is φ = 785129308992.

The previous prime is 2421809676967. The next prime is 2421809676983. The reversal of 2421809676978 is 8796769081242.

2421809676978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2421809676978² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1697200 + ... + 2779227.

It is an arithmetic number, because the mean of its divisors is an integer number (155517823362).

Almost surely, 2^{2421809676978} is an apocalyptic number.

2421809676978 is an abundant number, since it is smaller than the sum of its proper divisors (2554760670606).

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

2421809676978 is a wasteful number, since it uses less digits than its factorization.

2421809676978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478906.

The product of its (nonzero) digits is 146313216, while the sum is 69.

The spelling of 2421809676978 in words is "two trillion, four hundred twenty-one billion, eight hundred nine million, six hundred seventy-six thousand, nine hundred seventy-eight".