651623530332 has 24 divisors (see below), whose sum is σ = 1572884384400. Its totient is φ = 209717917696.

The previous prime is 651623530331. The next prime is 651623530391. The reversal of 651623530332 is 233035326156.

It is a happy number.

It is a super-2 number, since 2×651623530332² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651623530331) 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, 936240357 + ... + 936241052.

It is an arithmetic number, because the mean of its divisors is an integer number (65536849350).

Almost surely, 2^651623530332 is an apocalyptic number.

It is an amenable number.

651623530332 is an abundant number, since it is smaller than the sum of its proper divisors (921260854068).

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

651623530332 is a wasteful number, since it uses less digits than its factorization.

651623530332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872481445 (or 1872481443 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 39.

Adding to 651623530332 its reverse (233035326156), we get a palindrome (884658856488).

The spelling of 651623530332 in words is "six hundred fifty-one billion, six hundred twenty-three million, five hundred thirty thousand, three hundred thirty-two".