2405775540 has 72 divisors (see below), whose sum is σ = 7835964192. Its totient is φ = 549890880.

The previous prime is 2405775539. The next prime is 2405775601. The reversal of 2405775540 is 455775042.

2405775540 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406206 + ... + 412085.

It is an arithmetic number, because the mean of its divisors is an integer number (108832836).

Almost surely, 2^2405775540 is an apocalyptic number.

2405775540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405775540 is an abundant number, since it is smaller than the sum of its proper divisors (5430188652).

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

2405775540 is a wasteful number, since it uses less digits than its factorization.

2405775540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818317 (or 818308 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 39.

The square root of 2405775540 is about 49048.7057933234. The cubic root of 2405775540 is about 1339.9390222493.

The spelling of 2405775540 in words is "two billion, four hundred five million, seven hundred seventy-five thousand, five hundred forty".