120451744617 has 4 divisors (see below), whose sum is σ = 160602326160. Its totient is φ = 80301163076.

The previous prime is 120451744613. The next prime is 120451744643. The reversal of 120451744617 is 716447154021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 716447154021 = 3 ⋅238815718007.

It is a cyclic number.

It is not a de Polignac number, because 120451744617 - 2² = 120451744613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120451744613) 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, 20075290767 + ... + 20075290772.

It is an arithmetic number, because the mean of its divisors is an integer number (40150581540).

Almost surely, 2^120451744617 is an apocalyptic number.

It is an amenable number.

120451744617 is a deficient number, since it is larger than the sum of its proper divisors (40150581543).

120451744617 is an equidigital number, since it uses as much as digits as its factorization.

120451744617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40150581542.

The product of its (nonzero) digits is 188160, while the sum is 42.

Adding to 120451744617 its reverse (716447154021), we get a palindrome (836898898638).

The spelling of 120451744617 in words is "one hundred twenty billion, four hundred fifty-one million, seven hundred forty-four thousand, six hundred seventeen".