60531261421 has 16 divisors (see below), whose sum is σ = 63232579840. Its totient is φ = 57907586880.

The previous prime is 60531261403. The next prime is 60531261449. The reversal of 60531261421 is 12416213506.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 60531261421 - 2²⁹ = 59994390509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60531201421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229135 + ... + 416611.

It is an arithmetic number, because the mean of its divisors is an integer number (3952036240).

Almost surely, 2^60531261421 is an apocalyptic number.

60531261421 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

60531261421 is a deficient number, since it is larger than the sum of its proper divisors (2701318419).

60531261421 is a wasteful number, since it uses less digits than its factorization.

60531261421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187684.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 60531261421 its reverse (12416213506), we get a palindrome (72947474927).

The spelling of 60531261421 in words is "sixty billion, five hundred thirty-one million, two hundred sixty-one thousand, four hundred twenty-one".