120659453640 has 1152 divisors, whose sum is σ = 496544256000. Its totient is φ = 25098854400.

The previous prime is 120659453633. The next prime is 120659453647. The reversal of 120659453640 is 46354956021.

120659453640 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 594 + 53 + 6 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (120659453633) and next prime (120659453647).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (120659453647) by changing a digit.

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 287 ways as a sum of consecutive naturals, for example, 674075071 + ... + 674075249.

It is an arithmetic number, because the mean of its divisors is an integer number (431028000).

Almost surely, 2^120659453640 is an apocalyptic number.

120659453640 is a gapful number since it is divisible by the number (10) 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 120659453640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248272128000).

120659453640 is an abundant number, since it is smaller than the sum of its proper divisors (375884802360).

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

120659453640 is a wasteful number, since it uses less digits than its factorization.

120659453640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 120659453640 in words is "one hundred twenty billion, six hundred fifty-nine million, four hundred fifty-three thousand, six hundred forty".