406406486475 has 72 divisors (see below), whose sum is σ = 821476328400. Its totient is φ = 190250860800.

The previous prime is 406406486471. The next prime is 406406486483. The reversal of 406406486475 is 574684604604.

It is a happy number.

It is not a de Polignac number, because 406406486475 - 2² = 406406486471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406406486471) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2759340 + ... + 2902889.

It is an arithmetic number, because the mean of its divisors is an integer number (11409393450).

Almost surely, 2^406406486475 is an apocalyptic number.

406406486475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

406406486475 is an abundant number, since it is smaller than the sum of its proper divisors (415069841925).

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

406406486475 is a wasteful number, since it uses less digits than its factorization.

406406486475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662285 (or 5662277 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 54.

The spelling of 406406486475 in words is "four hundred six billion, four hundred six million, four hundred eighty-six thousand, four hundred seventy-five".