2005898477772 has 72 divisors (see below), whose sum is σ = 5449957911216. Its totient is φ = 572547921792.

The previous prime is 2005898477699. The next prime is 2005898477813. The reversal of 2005898477772 is 2777748985002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1088163 + ... + 2279450.

It is an arithmetic number, because the mean of its divisors is an integer number (75693859878).

Almost surely, 2^{2005898477772} is an apocalyptic number.

It is an amenable number.

2005898477772 is an abundant number, since it is smaller than the sum of its proper divisors (3444059433444).

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

2005898477772 is a wasteful number, since it uses less digits than its factorization.

2005898477772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368647 (or 3368638 counting only the distinct ones).

The product of its (nonzero) digits is 110638080, while the sum is 66.

The spelling of 2005898477772 in words is "two trillion, five billion, eight hundred ninety-eight million, four hundred seventy-seven thousand, seven hundred seventy-two".