60126436721 has 4 divisors (see below), whose sum is σ = 64751547252. Its totient is φ = 55501326192.

The previous prime is 60126436717. The next prime is 60126436753. The reversal of 60126436721 is 12763462106.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12763462106 = 2 ⋅6381731053.

It can be written as a sum of positive squares in 2 ways, for example, as 35010526321 + 25115910400 = 187111^2 + 158480^2 .

It is not a de Polignac number, because 60126436721 - 2² = 60126436717 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 (60126436421) by changing a digit.

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, 2312555246 + ... + 2312555271.

It is an arithmetic number, because the mean of its divisors is an integer number (16187886813).

Almost surely, 2^60126436721 is an apocalyptic number.

It is an amenable number.

60126436721 is a deficient number, since it is larger than the sum of its proper divisors (4625110531).

60126436721 is a wasteful number, since it uses less digits than its factorization.

60126436721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625110530.

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 60126436721 its reverse (12763462106), we get a palindrome (72889898827).

The spelling of 60126436721 in words is "sixty billion, one hundred twenty-six million, four hundred thirty-six thousand, seven hundred twenty-one".