60661703521 has 8 divisors (see below), whose sum is σ = 61956881280. Its totient is φ = 59366713488.

The previous prime is 60661703507. The next prime is 60661703527. The reversal of 60661703521 is 12530716606.

60661703521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 60661703521 - 2⁷ = 60661703393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60661703527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748575 + ... + 825643.

It is an arithmetic number, because the mean of its divisors is an integer number (7744610160).

Almost surely, 2^60661703521 is an apocalyptic number.

It is an amenable number.

60661703521 is a deficient number, since it is larger than the sum of its proper divisors (1295177759).

60661703521 is a wasteful number, since it uses less digits than its factorization.

60661703521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93863.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 60661703521 in words is "sixty billion, six hundred sixty-one million, seven hundred three thousand, five hundred twenty-one".