5405805538 has 32 divisors (see below), whose sum is σ = 9553824000. Its totient is φ = 2292861312.

The previous prime is 5405805499. The next prime is 5405805551. The reversal of 5405805538 is 8355085045.

It is a junction number, because it is equal to n+sod(n) for n = 5405805494 and 5405805503.

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, 25923 + ... + 107161.

It is an arithmetic number, because the mean of its divisors is an integer number (298557000).

Almost surely, 2^5405805538 is an apocalyptic number.

5405805538 is a deficient number, since it is larger than the sum of its proper divisors (4148018462).

5405805538 is an equidigital number, since it uses as much as digits as its factorization.

5405805538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81359 (or 81345 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 43.

The square root of 5405805538 is about 73524.1833548663. The cubic root of 5405805538 is about 1755.0391398267.

The spelling of 5405805538 in words is "five billion, four hundred five million, eight hundred five thousand, five hundred thirty-eight".