505666270128 has 40 divisors (see below), whose sum is σ = 1314318689728. Its totient is φ = 167521338432.

The previous prime is 505666270093. The next prime is 505666270147. The reversal of 505666270128 is 821072666505.

It is a happy number.

It is a super-3 number, since 3×505666270128³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32307250 + ... + 32322897.

Almost surely, 2^505666270128 is an apocalyptic number.

It is an amenable number.

505666270128 is an abundant number, since it is smaller than the sum of its proper divisors (808652419600).

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

505666270128 is a wasteful number, since it uses less digits than its factorization.

505666270128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64630321 (or 64630315 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 505666270128 in words is "five hundred five billion, six hundred sixty-six million, two hundred seventy thousand, one hundred twenty-eight".