405446780145 has 32 divisors (see below), whose sum is σ = 726815664000. Its totient is φ = 191267274240.

The previous prime is 405446780107. The next prime is 405446780203. The reversal of 405446780145 is 541087644504.

It is not a de Polignac number, because 405446780145 - 2¹¹ = 405446778097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405446780094 and 405446780103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33200020 + ... + 33212229.

It is an arithmetic number, because the mean of its divisors is an integer number (22712989500).

Almost surely, 2^405446780145 is an apocalyptic number.

It is an amenable number.

405446780145 is a deficient number, since it is larger than the sum of its proper divisors (321368883855).

405446780145 is a wasteful number, since it uses less digits than its factorization.

405446780145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66412305.

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 405446780145 in words is "four hundred five billion, four hundred forty-six million, seven hundred eighty thousand, one hundred forty-five".