649950001506 has 64 divisors (see below), whose sum is σ = 1555646601600. Its totient is φ = 199957526208.

The previous prime is 649950001489. The next prime is 649950001513. The reversal of 649950001506 is 605100059946.

It is a happy number.

649950001506 is a `hidden beast` number, since 6 + 4 + 99 + 50 + 0 + 0 + 1 + 506 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5470885 + ... + 5588423.

It is an arithmetic number, because the mean of its divisors is an integer number (24306978150).

Almost surely, 2^649950001506 is an apocalyptic number.

649950001506 is an abundant number, since it is smaller than the sum of its proper divisors (905696600094).

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

649950001506 is a wasteful number, since it uses less digits than its factorization.

649950001506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125440 (or 125434 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 649950001506 in words is "six hundred forty-nine billion, nine hundred fifty million, one thousand, five hundred six".