120100513553 has 4 divisors (see below), whose sum is σ = 120151042020. Its totient is φ = 120049985088.

The previous prime is 120100513549. The next prime is 120100513567. The reversal of 120100513553 is 355315001021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72241075729 + 47859437824 = 268777^2 + 218768^2 .

It is a cyclic number.

It is not a de Polignac number, because 120100513553 - 2² = 120100513549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120100513523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25260668 + ... + 25265421.

It is an arithmetic number, because the mean of its divisors is an integer number (30037760505).

Almost surely, 2^120100513553 is an apocalyptic number.

It is an amenable number.

120100513553 is a deficient number, since it is larger than the sum of its proper divisors (50528467).

120100513553 is an equidigital number, since it uses as much as digits as its factorization.

120100513553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50528466.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 120100513553 its reverse (355315001021), we get a palindrome (475415514574).

The spelling of 120100513553 in words is "one hundred twenty billion, one hundred million, five hundred thirteen thousand, five hundred fifty-three".