60661122661640 has 64 divisors (see below), whose sum is σ = 140894000640000. Its totient is φ = 23481116363520.

The previous prime is 60661122661639. The next prime is 60661122661669. The reversal of 60661122661640 is 4616622116606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48786386 + ... + 50014334.

It is an arithmetic number, because the mean of its divisors is an integer number (2201468760000).

Almost surely, 2^{60661122661640} is an apocalyptic number.

It is an amenable number.

60661122661640 is an abundant number, since it is smaller than the sum of its proper divisors (80232877978360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

60661122661640 is a wasteful number, since it uses less digits than its factorization.

60661122661640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267830 (or 1267826 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 60661122661640 in words is "sixty trillion, six hundred sixty-one billion, one hundred twenty-two million, six hundred sixty-one thousand, six hundred forty".