649888296192 has 288 divisors, whose sum is σ = 2092753488000. Its totient is φ = 198149898240.

The previous prime is 649888296107. The next prime is 649888296209. The reversal of 649888296192 is 291692888946.

649888296192 is a `hidden beast` number, since 64 + 98 + 8 + 8 + 296 + 192 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 649888296192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3723192 + ... + 3893832.

Almost surely, 2^649888296192 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 649888296192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1046376744000).

649888296192 is an abundant number, since it is smaller than the sum of its proper divisors (1442865191808).

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

649888296192 is a wasteful number, since it uses less digits than its factorization.

649888296192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170714 (or 170694 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 72.

The spelling of 649888296192 in words is "six hundred forty-nine billion, eight hundred eighty-eight million, two hundred ninety-six thousand, one hundred ninety-two".