649738202652 has 864 divisors, whose sum is σ = 2287060339200. Its totient is φ = 157413611520.

The previous prime is 649738202623. The next prime is 649738202677. The reversal of 649738202652 is 256202837946.

649738202652 is a `hidden beast` number, since 6 + 497 + 3 + 82 + 0 + 26 + 52 = 666.

649738202652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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

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, 1141894624 + ... + 1141895192.

Almost surely, 2^649738202652 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 649738202652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143530169600).

649738202652 is an abundant number, since it is smaller than the sum of its proper divisors (1637322136548).

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

649738202652 is a wasteful number, since it uses less digits than its factorization.

649738202652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 649738202652 in words is "six hundred forty-nine billion, seven hundred thirty-eight million, two hundred two thousand, six hundred fifty-two".