405515420201 has 4 divisors (see below), whose sum is σ = 407057304192. Its totient is φ = 403973536212.

The previous prime is 405515420173. The next prime is 405515420203. The reversal of 405515420201 is 102024515504.

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 a cyclic number.

It is not a de Polignac number, because 405515420201 - 2³⁴ = 388335551017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405515420203) 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, 770941601 + ... + 770942126.

It is an arithmetic number, because the mean of its divisors is an integer number (101764326048).

Almost surely, 2^405515420201 is an apocalyptic number.

It is an amenable number.

405515420201 is a deficient number, since it is larger than the sum of its proper divisors (1541883991).

405515420201 is a wasteful number, since it uses less digits than its factorization.

405515420201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541883990.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 405515420201 its reverse (102024515504), we get a palindrome (507539935705).

The spelling of 405515420201 in words is "four hundred five billion, five hundred fifteen million, four hundred twenty thousand, two hundred one".