651604708146 has 64 divisors (see below), whose sum is σ = 1532326129920. Its totient is φ = 180822481920.

The previous prime is 651604708123. The next prime is 651604708159. The reversal of 651604708146 is 641807406156.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 651604708095 and 651604708104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515766 + ... + 1252686.

It is an arithmetic number, because the mean of its divisors is an integer number (23942595780).

Almost surely, 2^651604708146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651604708146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766163064960).

651604708146 is an abundant number, since it is smaller than the sum of its proper divisors (880721421774).

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

651604708146 is a wasteful number, since it uses less digits than its factorization.

651604708146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737539.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 651604708146 in words is "six hundred fifty-one billion, six hundred four million, seven hundred eight thousand, one hundred forty-six".