120154534015 has 4 divisors (see below), whose sum is σ = 144185440824. Its totient is φ = 96123627208.

The previous prime is 120154534007. The next prime is 120154534021. The reversal of 120154534015 is 510435451021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510435451021 = 29 ⋅17601222449.

It is a cyclic number.

It is not a de Polignac number, because 120154534015 - 2³ = 120154534007 is a prime.

It is a super-2 number, since 2×120154534015² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12015453397 + ... + 12015453406.

It is an arithmetic number, because the mean of its divisors is an integer number (36046360206).

Almost surely, 2^120154534015 is an apocalyptic number.

120154534015 is a deficient number, since it is larger than the sum of its proper divisors (24030906809).

120154534015 is an equidigital number, since it uses as much as digits as its factorization.

120154534015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24030906808.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 120154534015 its reverse (510435451021), we get a palindrome (630589985036).

The spelling of 120154534015 in words is "one hundred twenty billion, one hundred fifty-four million, five hundred thirty-four thousand, fifteen".