651239476322 has 18 divisors (see below), whose sum is σ = 986258997633. Its totient is φ = 322516076152.

The previous prime is 651239476301. The next prime is 651239476351. The reversal of 651239476322 is 223674932156.

It can be written as a sum of positive squares in 2 ways, for example, as 361223838361 + 290015637961 = 601019^2 + 538531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=570631.

It is a super-2 number, since 2×651239476322² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 122112368 + ... + 122117700.

Almost surely, 2^651239476322 is an apocalyptic number.

651239476322 is a deficient number, since it is larger than the sum of its proper divisors (335019521311).

651239476322 is an frugal number, since it uses more digits than its factorization.

651239476322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882 (or 5442 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 50.

Multiplying 651239476322 by its sum of digits (50), we get a square (32561973816100 = 5706310²).

The spelling of 651239476322 in words is "six hundred fifty-one billion, two hundred thirty-nine million, four hundred seventy-six thousand, three hundred twenty-two".