472428747115721 has 4 divisors (see below), whose sum is σ = 515376815035344. Its totient is φ = 429480679196100.

The previous prime is 472428747115601. The next prime is 472428747115769. The reversal of 472428747115721 is 127511747824274.

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 472428747115721 - 2⁴² = 468030700604617 is a prime.

It is a super-2 number, since 2×472428747115721² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472428747115021) 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, 21474033959795 + ... + 21474033959816.

It is an arithmetic number, because the mean of its divisors is an integer number (128844203758836).

Almost surely, 2^{472428747115721} is an apocalyptic number.

It is an amenable number.

472428747115721 is a deficient number, since it is larger than the sum of its proper divisors (42948067919623).

472428747115721 is a wasteful number, since it uses less digits than its factorization.

472428747115721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42948067919622.

The product of its digits is 49172480, while the sum is 62.

The spelling of 472428747115721 in words is "four hundred seventy-two trillion, four hundred twenty-eight billion, seven hundred forty-seven million, one hundred fifteen thousand, seven hundred twenty-one".