648474066432 has 600 divisors, whose sum is σ = 2044347544008. Its totient is φ = 204569763840.

The previous prime is 648474066431. The next prime is 648474066439. The reversal of 648474066432 is 234660474846.

648474066432 is a `hidden beast` number, since 6 + 4 + 84 + 74 + 0 + 66 + 432 = 666.

It is a super-2 number, since 2×648474066432² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648474066431) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2112293223 + ... + 2112293529.

Almost surely, 2^648474066432 is an apocalyptic number.

648474066432 is a gapful number since it is divisible by the number (62) 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 648474066432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022173772004).

648474066432 is an abundant number, since it is smaller than the sum of its proper divisors (1395873477576).

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

648474066432 is an equidigital number, since it uses as much as digits as its factorization.

648474066432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 54.

The spelling of 648474066432 in words is "six hundred forty-eight billion, four hundred seventy-four million, sixty-six thousand, four hundred thirty-two".