405572712377 has 4 divisors (see below), whose sum is σ = 463511671296. Its totient is φ = 347633753460.

The previous prime is 405572712353. The next prime is 405572712407. The reversal of 405572712377 is 773217275504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 405572712377 - 2¹⁶ = 405572646841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405572715377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28969479449 + ... + 28969479462.

It is an arithmetic number, because the mean of its divisors is an integer number (115877917824).

Almost surely, 2^405572712377 is an apocalyptic number.

It is an amenable number.

405572712377 is a deficient number, since it is larger than the sum of its proper divisors (57938958919).

405572712377 is an equidigital number, since it uses as much as digits as its factorization.

405572712377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57938958918.

The product of its (nonzero) digits is 2881200, while the sum is 50.

The spelling of 405572712377 in words is "four hundred five billion, five hundred seventy-two million, seven hundred twelve thousand, three hundred seventy-seven".