485909157128 has 16 divisors (see below), whose sum is σ = 911655233280. Its totient is φ = 242801094928.

The previous prime is 485909157127. The next prime is 485909157143. The reversal of 485909157128 is 821751909584.

It is a super-2 number, since 2×485909157128² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (485909157127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19172000 + ... + 19197327.

It is an arithmetic number, because the mean of its divisors is an integer number (56978452080).

Almost surely, 2^485909157128 is an apocalyptic number.

It is an amenable number.

485909157128 is a deficient number, since it is larger than the sum of its proper divisors (425746076152).

485909157128 is a wasteful number, since it uses less digits than its factorization.

485909157128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38370916 (or 38370912 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 59.

The spelling of 485909157128 in words is "four hundred eighty-five billion, nine hundred nine million, one hundred fifty-seven thousand, one hundred twenty-eight".