485947871640 has 1792 divisors, whose sum is σ = 2243780352000. Its totient is φ = 91550269440.

The previous prime is 485947871593. The next prime is 485947871653. The reversal of 485947871640 is 46178749584.

485947871640 is a `hidden beast` number, since 4 + 8 + 59 + 478 + 71 + 6 + 40 = 666.

It is a super-2 number, since 2×485947871640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 447 ways as a sum of consecutive naturals, for example, 1106942541 + ... + 1106942979.

Almost surely, 2^485947871640 is an apocalyptic number.

485947871640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 485947871640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121890176000).

485947871640 is an abundant number, since it is smaller than the sum of its proper divisors (1757832480360).

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

485947871640 is a wasteful number, since it uses less digits than its factorization.

485947871640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 485947871640 in words is "four hundred eighty-five billion, nine hundred forty-seven million, eight hundred seventy-one thousand, six hundred forty".