405550201749 has 32 divisors (see below), whose sum is σ = 675283338240. Its totient is φ = 210324816000.

The previous prime is 405550201739. The next prime is 405550201753. The reversal of 405550201749 is 947102055504.

It is not a de Polignac number, because 405550201749 - 2⁴ = 405550201733 is a prime.

It is a super-2 number, since 2×405550201749² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 405550201749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405550201739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1321759 + ... + 1599420.

It is an arithmetic number, because the mean of its divisors is an integer number (21102604320).

Almost surely, 2^405550201749 is an apocalyptic number.

It is an amenable number.

405550201749 is a deficient number, since it is larger than the sum of its proper divisors (269733136491).

405550201749 is a wasteful number, since it uses less digits than its factorization.

405550201749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921801.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 405550201749 in words is "four hundred five billion, five hundred fifty million, two hundred one thousand, seven hundred forty-nine".