651370212020 has 48 divisors (see below), whose sum is σ = 1507004545536. Its totient is φ = 234516720000.

The previous prime is 651370211971. The next prime is 651370212037. The reversal of 651370212020 is 20212073156.

It is a happy number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 14635076 + ... + 14679515.

It is an arithmetic number, because the mean of its divisors is an integer number (31395928032).

Almost surely, 2^651370212020 is an apocalyptic number.

It is an amenable number.

651370212020 is an abundant number, since it is smaller than the sum of its proper divisors (855634333516).

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

651370212020 is a wasteful number, since it uses less digits than its factorization.

651370212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29314712 (or 29314710 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 651370212020 its reverse (20212073156), we get a palindrome (671582285176).

The spelling of 651370212020 in words is "six hundred fifty-one billion, three hundred seventy million, two hundred twelve thousand, twenty".