421146766545 has 16 divisors (see below), whose sum is σ = 683892064320. Its totient is φ = 221259196224.

The previous prime is 421146766543. The next prime is 421146766559. The reversal of 421146766545 is 545667641124.

It is not a de Polignac number, because 421146766545 - 2¹ = 421146766543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421146766543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209524750 + ... + 209526759.

It is an arithmetic number, because the mean of its divisors is an integer number (42743254020).

Almost surely, 2^421146766545 is an apocalyptic number.

It is an amenable number.

421146766545 is a deficient number, since it is larger than the sum of its proper divisors (262745297775).

421146766545 is a wasteful number, since it uses less digits than its factorization.

421146766545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419051584.

The product of its digits is 4838400, while the sum is 51.

The spelling of 421146766545 in words is "four hundred twenty-one billion, one hundred forty-six million, seven hundred sixty-six thousand, five hundred forty-five".