64661303750710 has 128 divisors (see below), whose sum is σ = 120184768915200. Its totient is φ = 25036699484160.

The previous prime is 64661303750707. The next prime is 64661303750741. The reversal of 64661303750710 is 1705730316646.

It is a super-2 number, since 2×64661303750710² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14909221662 + ... + 14909225998.

It is an arithmetic number, because the mean of its divisors is an integer number (938943507150).

Almost surely, 2^{64661303750710} is an apocalyptic number.

64661303750710 is a deficient number, since it is larger than the sum of its proper divisors (55523465164490).

64661303750710 is a wasteful number, since it uses less digits than its factorization.

64661303750710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 64661303750710 in words is "sixty-four trillion, six hundred sixty-one billion, three hundred three million, seven hundred fifty thousand, seven hundred ten".