2405390401671 has 24 divisors (see below), whose sum is σ = 3364624774896. Its totient is φ = 1528413237120.

The previous prime is 2405390401643. The next prime is 2405390401747. The reversal of 2405390401671 is 1761040935042.

It is not a de Polignac number, because 2405390401671 - 2⁹ = 2405390401159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405390401571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2251000 + ... + 3142893.

It is an arithmetic number, because the mean of its divisors is an integer number (140192698954).

Almost surely, 2^{2405390401671} is an apocalyptic number.

2405390401671 is a deficient number, since it is larger than the sum of its proper divisors (959234373225).

2405390401671 is a wasteful number, since it uses less digits than its factorization.

2405390401671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394223 (or 5394200 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 2405390401671 in words is "two trillion, four hundred five billion, three hundred ninety million, four hundred one thousand, six hundred seventy-one".