647650251140 has 24 divisors (see below), whose sum is σ = 1360220117760. Its totient is φ = 259030654688.

The previous prime is 647650251139. The next prime is 647650251151. The reversal of 647650251140 is 41152056746.

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 7 ways as a sum of consecutive naturals, for example, 1659572 + ... + 2012331.

It is an arithmetic number, because the mean of its divisors is an integer number (56675838240).

Almost surely, 2^647650251140 is an apocalyptic number.

It is an amenable number.

647650251140 is an abundant number, since it is smaller than the sum of its proper divisors (712569866620).

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

647650251140 is a wasteful number, since it uses less digits than its factorization.

647650251140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680731 (or 3680729 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 647650251140 in words is "six hundred forty-seven billion, six hundred fifty million, two hundred fifty-one thousand, one hundred forty".