649115849760 has 576 divisors, whose sum is σ = 2599750702080. Its totient is φ = 135134576640.

The previous prime is 649115849749. The next prime is 649115849807. The reversal of 649115849760 is 67948511946.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 649115849694 and 649115849703.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12368856 + ... + 12421224.

It is an arithmetic number, because the mean of its divisors is an integer number (4513456080).

Almost surely, 2^649115849760 is an apocalyptic number.

649115849760 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 649115849760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299875351040).

649115849760 is an abundant number, since it is smaller than the sum of its proper divisors (1950634852320).

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

649115849760 is a wasteful number, since it uses less digits than its factorization.

649115849760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52449 (or 52434 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 649115849760 in words is "six hundred forty-nine billion, one hundred fifteen million, eight hundred forty-nine thousand, seven hundred sixty".