472428745220477 has 4 divisors (see below), whose sum is σ = 488719391607420. Its totient is φ = 456138098833536.

The previous prime is 472428745220441. The next prime is 472428745220479. The reversal of 472428745220477 is 774022547824274.

It is a happy number.

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 400415547868996 + 72013197351481 = 20010386^2 + 8486059^2 .

It is a cyclic number.

It is not a de Polignac number, because 472428745220477 - 2⁶ = 472428745220413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472428745220479) 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, 8145323193428 + ... + 8145323193485.

It is an arithmetic number, because the mean of its divisors is an integer number (122179847901855).

Almost surely, 2^{472428745220477} is an apocalyptic number.

It is an amenable number.

472428745220477 is a deficient number, since it is larger than the sum of its proper divisors (16290646386943).

472428745220477 is a wasteful number, since it uses less digits than its factorization.

472428745220477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16290646386942.

The product of its (nonzero) digits is 393379840, while the sum is 65.

The spelling of 472428745220477 in words is "four hundred seventy-two trillion, four hundred twenty-eight billion, seven hundred forty-five million, two hundred twenty thousand, four hundred seventy-seven".