2046978991908 has 18 divisors (see below), whose sum is σ = 5174308007414. Its totient is φ = 682326330624.

The previous prime is 2046978991877. The next prime is 2046978991913. The reversal of 2046978991908 is 8091998796402.

2046978991908 is a `hidden beast` number, since 2 + 0 + 469 + 78 + 9 + 9 + 1 + 90 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1371807822564 + 675171169344 = 1171242^2 + 821688^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28430263741 + ... + 28430263812.

Almost surely, 2^{2046978991908} is an apocalyptic number.

It is an amenable number.

2046978991908 is an abundant number, since it is smaller than the sum of its proper divisors (3127329015506).

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

2046978991908 is a wasteful number, since it uses less digits than its factorization.

2046978991908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56860527563 (or 56860527558 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 72.

The spelling of 2046978991908 in words is "two trillion, forty-six billion, nine hundred seventy-eight million, nine hundred ninety-one thousand, nine hundred eight".