651864826220 has 24 divisors (see below), whose sum is σ = 1413074721408. Its totient is φ = 252334771200.

The previous prime is 651864826213. The next prime is 651864826229. The reversal of 651864826220 is 22628468156.

It is not an unprimeable number, because it can be changed into a prime (651864826229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525696821 + ... + 525698060.

It is an arithmetic number, because the mean of its divisors is an integer number (58878113392).

Almost surely, 2^651864826220 is an apocalyptic number.

It is an amenable number.

651864826220 is an abundant number, since it is smaller than the sum of its proper divisors (761209895188).

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

651864826220 is a wasteful number, since it uses less digits than its factorization.

651864826220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051394921 (or 1051394919 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 651864826220 in words is "six hundred fifty-one billion, eight hundred sixty-four million, eight hundred twenty-six thousand, two hundred twenty".