428315978475 has 216 divisors, whose sum is σ = 984232005120. Its totient is φ = 174210537600.

The previous prime is 428315978449. The next prime is 428315978491. The reversal of 428315978475 is 574879513824.

428315978475 is a `hidden beast` number, since 4 + 2 + 8 + 3 + 159 + 7 + 8 + 475 = 666.

It is not a de Polignac number, because 428315978475 - 2⁵ = 428315978443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 8933116 + ... + 8980934.

Almost surely, 2^428315978475 is an apocalyptic number.

428315978475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

428315978475 is an abundant number, since it is smaller than the sum of its proper divisors (555916026645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428315978475 is a wasteful number, since it uses less digits than its factorization.

428315978475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47911 (or 47892 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 63.

It can be divided in two parts, 4283159 and 78475, that added together give a palindrome (4361634).

The spelling of 428315978475 in words is "four hundred twenty-eight billion, three hundred fifteen million, nine hundred seventy-eight thousand, four hundred seventy-five".