660034620046640 has 40 divisors (see below), whose sum is σ = 1534613982133248. Its totient is φ = 264008086208000.

The previous prime is 660034620046597. The next prime is 660034620046723. The reversal of 660034620046640 is 46640026430066.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×660034620046640² (a number of 30 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 86338736 + ... + 93672015.

Almost surely, 2^{660034620046640} is an apocalyptic number.

It is an amenable number.

660034620046640 is an abundant number, since it is smaller than the sum of its proper divisors (874579362086608).

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

660034620046640 is a wasteful number, since it uses less digits than its factorization.

660034620046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180056597 (or 180056591 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 47.

The spelling of 660034620046640 in words is "six hundred sixty trillion, thirty-four billion, six hundred twenty million, forty-six thousand, six hundred forty".