651645453666480 has 480 divisors, whose sum is σ = 2549994075433728. Its totient is φ = 136440483379200.

The previous prime is 651645453666469. The next prime is 651645453666491. The reversal of 651645453666480 is 84666354546156.

It is an interprime number because it is at equal distance from previous prime (651645453666469) and next prime (651645453666491).

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 95 ways as a sum of consecutive naturals, for example, 3758335 + ... + 36296225.

Almost surely, 2^{651645453666480} is an apocalyptic number.

651645453666480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651645453666480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274997037716864).

651645453666480 is an abundant number, since it is smaller than the sum of its proper divisors (1898348621767248).

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

651645453666480 is a wasteful number, since it uses less digits than its factorization.

651645453666480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32538065 (or 32538052 counting only the distinct ones).

The product of its (nonzero) digits is 1492992000, while the sum is 69.

The spelling of 651645453666480 in words is "six hundred fifty-one trillion, six hundred forty-five billion, four hundred fifty-three million, six hundred sixty-six thousand, four hundred eighty".