120415145565 has 32 divisors (see below), whose sum is σ = 226346795136. Its totient is φ = 53892092160.

The previous prime is 120415145551. The next prime is 120415145567. The reversal of 120415145565 is 565541514021.

It is not a de Polignac number, because 120415145565 - 2⁵ = 120415145533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120415145567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28066654 + ... + 28070943.

It is an arithmetic number, because the mean of its divisors is an integer number (7073337348).

Almost surely, 2^120415145565 is an apocalyptic number.

120415145565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120415145565 is a deficient number, since it is larger than the sum of its proper divisors (105931649571).

120415145565 is a wasteful number, since it uses less digits than its factorization.

120415145565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56137629.

The product of its (nonzero) digits is 120000, while the sum is 39.

Adding to 120415145565 its reverse (565541514021), we get a palindrome (685956659586).

The spelling of 120415145565 in words is "one hundred twenty billion, four hundred fifteen million, one hundred forty-five thousand, five hundred sixty-five".