649596522120 has 1152 divisors, whose sum is σ = 2601653644800. Its totient is φ = 128511774720.

The previous prime is 649596522101. The next prime is 649596522139. The reversal of 649596522120 is 21225695946.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (649596522101) and next prime (649596522139).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2717976961 + ... + 2717977199.

It is an arithmetic number, because the mean of its divisors is an integer number (2258379900).

Almost surely, 2^649596522120 is an apocalyptic number.

649596522120 is a gapful number since it is divisible by the number (60) 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 649596522120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300826822400).

649596522120 is an abundant number, since it is smaller than the sum of its proper divisors (1952057122680).

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

649596522120 is a wasteful number, since it uses less digits than its factorization.

649596522120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 649596522120 in words is "six hundred forty-nine billion, five hundred ninety-six million, five hundred twenty-two thousand, one hundred twenty".