60661644614420 has 24 divisors (see below), whose sum is σ = 127389859726248. Its totient is φ = 24264580505600.

The previous prime is 60661644614393. The next prime is 60661644614423. The reversal of 60661644614420 is 2441644616606.

It can be written as a sum of positive squares in 4 ways, for example, as 725743832836 + 59935900781584 = 851906^2 + 7741828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60661644614423) 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, 1821380 + ... + 11164260.

It is an arithmetic number, because the mean of its divisors is an integer number (5307910821927).

Almost surely, 2^{60661644614420} is an apocalyptic number.

It is an amenable number.

60661644614420 is an abundant number, since it is smaller than the sum of its proper divisors (66728215111828).

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

60661644614420 is a wasteful number, since it uses less digits than its factorization.

60661644614420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9667531 (or 9667529 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 50.

The spelling of 60661644614420 in words is "sixty trillion, six hundred sixty-one billion, six hundred forty-four million, six hundred fourteen thousand, four hundred twenty".