462347472821 has 4 divisors (see below), whose sum is σ = 497912663052. Its totient is φ = 426782282592.

The previous prime is 462347472809. The next prime is 462347472859. The reversal of 462347472821 is 128274743264.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242118123025 + 220229349796 = 492055^2 + 469286^2 .

It is a cyclic number.

It is not a de Polignac number, because 462347472821 - 2³⁰ = 461273730997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 462347472821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (462340472821) 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, 17782595096 + ... + 17782595121.

It is an arithmetic number, because the mean of its divisors is an integer number (124478165763).

Almost surely, 2^462347472821 is an apocalyptic number.

It is an amenable number.

462347472821 is a deficient number, since it is larger than the sum of its proper divisors (35565190231).

462347472821 is a wasteful number, since it uses less digits than its factorization.

462347472821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35565190230.

The product of its digits is 3612672, while the sum is 50.

The spelling of 462347472821 in words is "four hundred sixty-two billion, three hundred forty-seven million, four hundred seventy-two thousand, eight hundred twenty-one".