2581920392633 has 32 divisors (see below), whose sum is σ = 2841676992000. Its totient is φ = 2339992238080.

The previous prime is 2581920392627. The next prime is 2581920392641. The reversal of 2581920392633 is 3362930291852.

2581920392633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2581920392633 - 2³² = 2577625425337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2581920392033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2905553 + ... + 3688641.

It is an arithmetic number, because the mean of its divisors is an integer number (88802406000).

Almost surely, 2^{2581920392633} is an apocalyptic number.

It is an amenable number.

2581920392633 is a deficient number, since it is larger than the sum of its proper divisors (259756599367).

2581920392633 is a wasteful number, since it uses less digits than its factorization.

2581920392633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783265.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 2581920392633 in words is "two trillion, five hundred eighty-one billion, nine hundred twenty million, three hundred ninety-two thousand, six hundred thirty-three".