120664564641 has 12 divisors (see below), whose sum is σ = 179915623680. Its totient is φ = 77848106040.

The previous prime is 120664564633. The next prime is 120664564649. The reversal of 120664564641 is 146465466021.

120664564641 is a `hidden beast` number, since 1 + 20 + 6 + 6 + 4 + 564 + 64 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (120664564633) and next prime (120664564649).

It is not a de Polignac number, because 120664564641 - 2³ = 120664564633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120664564649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216244461 + ... + 216245018.

It is an arithmetic number, because the mean of its divisors is an integer number (14992968640).

Almost surely, 2^120664564641 is an apocalyptic number.

It is an amenable number.

120664564641 is a deficient number, since it is larger than the sum of its proper divisors (59251059039).

120664564641 is a wasteful number, since it uses less digits than its factorization.

120664564641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432489516 (or 432489513 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 120664564641 in words is "one hundred twenty billion, six hundred sixty-four million, five hundred sixty-four thousand, six hundred forty-one".