6405119506 has 8 divisors (see below), whose sum is σ = 9867346380. Its totient is φ = 3116004048.

The previous prime is 6405119491. The next prime is 6405119519. The reversal of 6405119506 is 6059115046.

It can be written as a sum of positive squares in 2 ways, for example, as 6317865225 + 87254281 = 79485^2 + 9341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6405119506² = 82051111772283368072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43277761 + ... + 43277908.

Almost surely, 2^6405119506 is an apocalyptic number.

6405119506 is a deficient number, since it is larger than the sum of its proper divisors (3462226874).

6405119506 is a wasteful number, since it uses less digits than its factorization.

6405119506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86555708.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 6405119506 is about 80031.9905162929. The cubic root of 6405119506 is about 1857.1304565410.

The spelling of 6405119506 in words is "six billion, four hundred five million, one hundred nineteen thousand, five hundred six".