405770274001 has 3 divisors (see below), whose sum is σ = 405770911003. Its totient is φ = 405769637000.

The previous prime is 405770273983. The next prime is 405770274017. The reversal of 405770274001 is 100472077504.

The square root of 405770274001 is 637001.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 209946323601 + 195823950400 = 458199^2 + 442520^2 .

It is not a de Polignac number, because 405770274001 - 2³⁵ = 371410535633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405770214001) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 318501 + ... + 955501.

Almost surely, 2^405770274001 is an apocalyptic number.

405770274001 is the 637001-st square number.

405770274001 is the 318501-st centered octagonal number.

It is an amenable number.

405770274001 is a deficient number, since it is larger than the sum of its proper divisors (637002).

405770274001 is an frugal number, since it uses more digits than its factorization.

405770274001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274002 (or 637001 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 37.

The spelling of 405770274001 in words is "four hundred five billion, seven hundred seventy million, two hundred seventy-four thousand, one".