649021675008 has 320 divisors, whose sum is σ = 2066789716992. Its totient is φ = 176956538880.

The previous prime is 649021674967. The next prime is 649021675087. The reversal of 649021675008 is 800576120946.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 114000610 + ... + 114006302.

Almost surely, 2^649021675008 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 649021675008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033394858496).

649021675008 is an abundant number, since it is smaller than the sum of its proper divisors (1417768041984).

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

649021675008 is a wasteful number, since it uses less digits than its factorization.

649021675008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205 (or 6189 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 649021675008 in words is "six hundred forty-nine billion, twenty-one million, six hundred seventy-five thousand, eight".