648974011392 has 528 divisors, whose sum is σ = 2231985916160. Its totient is φ = 184497979392.

The previous prime is 648974011381. The next prime is 648974011409. The reversal of 648974011392 is 293110479846.

648974011392 is a `hidden beast` number, since 6 + 489 + 7 + 40 + 113 + 9 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 398876883 + ... + 398878509.

Almost surely, 2^648974011392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648974011392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115992958080).

648974011392 is an abundant number, since it is smaller than the sum of its proper divisors (1583011904768).

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

648974011392 is a wasteful number, since it uses less digits than its factorization.

648974011392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 648974011392 in words is "six hundred forty-eight billion, nine hundred seventy-four million, eleven thousand, three hundred ninety-two".