405165040647 has 16 divisors (see below), whose sum is σ = 540602923488. Its totient is φ = 269918668800.

The previous prime is 405165040639. The next prime is 405165040681. The reversal of 405165040647 is 746040561504.

It is not a de Polignac number, because 405165040647 - 2³ = 405165040639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405165040599 and 405165040608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405165047647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33475897 + ... + 33487997.

It is an arithmetic number, because the mean of its divisors is an integer number (33787682718).

Almost surely, 2^405165040647 is an apocalyptic number.

405165040647 is a deficient number, since it is larger than the sum of its proper divisors (135437882841).

405165040647 is a wasteful number, since it uses less digits than its factorization.

405165040647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19090.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 405165040647 in words is "four hundred five billion, one hundred sixty-five million, forty thousand, six hundred forty-seven".