4651661163664 has 10 divisors (see below), whose sum is σ = 9012593504630. Its totient is φ = 2325830581824.

The previous prime is 4651661163659. The next prime is 4651661163679. The reversal of 4651661163664 is 4663611661564.

It can be written as a sum of positive squares in only one way, i.e., 4410588019600 + 241073144064 = 2100140^2 + 490992^2 .

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 as a sum of consecutive naturals, namely, 145364411349 + ... + 145364411380.

It is an arithmetic number, because the mean of its divisors is an integer number (901259350463).

Almost surely, 2^{4651661163664} is an apocalyptic number.

It is an amenable number.

4651661163664 is a deficient number, since it is larger than the sum of its proper divisors (4360932340966).

4651661163664 is a wasteful number, since it uses less digits than its factorization.

4651661163664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290728822737 (or 290728822731 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 55.

The spelling of 4651661163664 in words is "four trillion, six hundred fifty-one billion, six hundred sixty-one million, one hundred sixty-three thousand, six hundred sixty-four".