651220653246 has 16 divisors (see below), whose sum is σ = 1302918598800. Its totient is φ = 216994002368.

The previous prime is 651220653241. The next prime is 651220653263. The reversal of 651220653246 is 642356022156.

It is a junction number, because it is equal to n+sod(n) for n = 651220653198 and 651220653207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651220653241) 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, 19869441 + ... + 19902188.

It is an arithmetic number, because the mean of its divisors is an integer number (81432412425).

Almost surely, 2^651220653246 is an apocalyptic number.

651220653246 is an abundant number, since it is smaller than the sum of its proper divisors (651697945554).

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

651220653246 is a wasteful number, since it uses less digits than its factorization.

651220653246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39774363.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 651220653246 in words is "six hundred fifty-one billion, two hundred twenty million, six hundred fifty-three thousand, two hundred forty-six".