406172646075 has 54 divisors (see below), whose sum is σ = 781252071444. Its totient is φ = 185661262080.

The previous prime is 406172646073. The next prime is 406172646101. The reversal of 406172646075 is 570646271604.

It is not a de Polignac number, because 406172646075 - 2¹ = 406172646073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406172646073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 38630019 + ... + 38640531.

Almost surely, 2^406172646075 is an apocalyptic number.

406172646075 is a deficient number, since it is larger than the sum of its proper divisors (375079425369).

406172646075 is an frugal number, since it uses more digits than its factorization.

406172646075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21053 (or 10528 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

Multiplying 406172646075 by its sum of digits (48), we get a square (19496287011600 = 4415460²).

The spelling of 406172646075 in words is "four hundred six billion, one hundred seventy-two million, six hundred forty-six thousand, seventy-five".