478283528202021 has 32 divisors (see below), whose sum is σ = 716534214480000. Its totient is φ = 315271020265344.

The previous prime is 478283528202019. The next prime is 478283528202043. The reversal of 478283528202021 is 120202825382874.

478283528202021 is a `hidden beast` number, since 4 + 7 + 8 + 2 + 8 + 352 + 82 + 0 + 202 + 1 = 666.

It is not a de Polignac number, because 478283528202021 - 2¹ = 478283528202019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478283528202071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437865055 + ... + 438956003.

It is an arithmetic number, because the mean of its divisors is an integer number (22391694202500).

Almost surely, 2^{478283528202021} is an apocalyptic number.

It is an amenable number.

478283528202021 is a deficient number, since it is larger than the sum of its proper divisors (238250686277979).

478283528202021 is a wasteful number, since it uses less digits than its factorization.

478283528202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273490 (or 1273484 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 54.

The spelling of 478283528202021 in words is "four hundred seventy-eight trillion, two hundred eighty-three billion, five hundred twenty-eight million, two hundred two thousand, twenty-one".