420331785532857 has 48 divisors (see below), whose sum is σ = 685208411035200. Its totient is φ = 245952096593280.

The previous prime is 420331785532849. The next prime is 420331785532873. The reversal of 420331785532857 is 758235587133024.

420331785532857 is a `hidden beast` number, since 4 + 2 + 0 + 3 + 3 + 1 + 7 + 8 + 553 + 28 + 57 = 666.

It is not a de Polignac number, because 420331785532857 - 2³ = 420331785532849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420331785532794 and 420331785532803.

It is not an unprimeable number, because it can be changed into a prime (420331785532817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67378558 + ... + 73352120.

It is an arithmetic number, because the mean of its divisors is an integer number (14275175229900).

Almost surely, 2^{420331785532857} is an apocalyptic number.

It is an amenable number.

420331785532857 is a deficient number, since it is larger than the sum of its proper divisors (264876625502343).

420331785532857 is a wasteful number, since it uses less digits than its factorization.

420331785532857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5998118 (or 5998115 counting only the distinct ones).

The product of its (nonzero) digits is 169344000, while the sum is 63.

The spelling of 420331785532857 in words is "four hundred twenty trillion, three hundred thirty-one billion, seven hundred eighty-five million, five hundred thirty-two thousand, eight hundred fifty-seven".