423645661530 has 96 divisors (see below), whose sum is σ = 1355666143104. Its totient is φ = 89384577408.

The previous prime is 423645661471. The next prime is 423645661589. The reversal of 423645661530 is 35166546324.

423645661530 is a `hidden beast` number, since 4 + 2 + 3 + 6 + 4 + 56 + 61 + 530 = 666.

It is an interprime number because it is at equal distance from previous prime (423645661471) and next prime (423645661589).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25855404 + ... + 25871783.

It is an arithmetic number, because the mean of its divisors is an integer number (14121522324).

Almost surely, 2^423645661530 is an apocalyptic number.

423645661530 is an abundant number, since it is smaller than the sum of its proper divisors (932020481574).

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

423645661530 is a wasteful number, since it uses less digits than its factorization.

423645661530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51727220 (or 51727217 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 423645661530 in words is "four hundred twenty-three billion, six hundred forty-five million, six hundred sixty-one thousand, five hundred thirty".