120201550440 has 32 divisors (see below), whose sum is σ = 360604651680. Its totient is φ = 32053746752.

The previous prime is 120201550409. The next prime is 120201550451. The reversal of 120201550440 is 44055102021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 120201550440.

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, 500839674 + ... + 500839913.

It is an arithmetic number, because the mean of its divisors is an integer number (11268895365).

Almost surely, 2^120201550440 is an apocalyptic number.

120201550440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120201550440 is an abundant number, since it is smaller than the sum of its proper divisors (240403101240).

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

120201550440 is a wasteful number, since it uses less digits than its factorization.

120201550440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001679601 (or 1001679597 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 120201550440 its reverse (44055102021), we get a palindrome (164256652461).

The spelling of 120201550440 in words is "one hundred twenty billion, two hundred one million, five hundred fifty thousand, four hundred forty".