6404057172426 has 32 divisors (see below), whose sum is σ = 13482412968960. Its totient is φ = 2022305742576.

The previous prime is 6404057172421. The next prime is 6404057172431. The reversal of 6404057172426 is 6242717504046.

It is an interprime number because it is at equal distance from previous prime (6404057172421) and next prime (6404057172431).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6404057172421) 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, 8793405 + ... + 9493791.

It is an arithmetic number, because the mean of its divisors is an integer number (421325405280).

Almost surely, 2^{6404057172426} is an apocalyptic number.

6404057172426 is an abundant number, since it is smaller than the sum of its proper divisors (7078355796534).

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

6404057172426 is a wasteful number, since it uses less digits than its factorization.

6404057172426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780618.

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 6404057172426 in words is "six trillion, four hundred four billion, fifty-seven million, one hundred seventy-two thousand, four hundred twenty-six".