61740128472 has 64 divisors (see below), whose sum is σ = 172489080960. Its totient is φ = 18252806400.

The previous prime is 61740128459. The next prime is 61740128497. The reversal of 61740128472 is 27482104716.

It is a congruent number.

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, 2841178 + ... + 2862825.

It is an arithmetic number, because the mean of its divisors is an integer number (2695141890).

Almost surely, 2^61740128472 is an apocalyptic number.

It is an amenable number.

61740128472 is an abundant number, since it is smaller than the sum of its proper divisors (110748952488).

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

61740128472 is a wasteful number, since it uses less digits than its factorization.

61740128472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704064 (or 5704060 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 61740128472 in words is "sixty-one billion, seven hundred forty million, one hundred twenty-eight thousand, four hundred seventy-two".