405492948672 has 56 divisors (see below), whose sum is σ = 1226133444096. Its totient is φ = 115855127808.

The previous prime is 405492948667. The next prime is 405492948673. The reversal of 405492948672 is 276849294504.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (405492948673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150851688 + ... + 150854375.

Almost surely, 2^405492948672 is an apocalyptic number.

405492948672 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

405492948672 is an abundant number, since it is smaller than the sum of its proper divisors (820640495424).

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

405492948672 is a wasteful number, since it uses less digits than its factorization.

405492948672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301706085 (or 301706075 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 60.

The spelling of 405492948672 in words is "four hundred five billion, four hundred ninety-two million, nine hundred forty-eight thousand, six hundred seventy-two".