61740405727312 has 40 divisors (see below), whose sum is σ = 128827411096104. Its totient is φ = 28494757883904.

The previous prime is 61740405727307. The next prime is 61740405727327. The reversal of 61740405727312 is 21372750404716.

It can be written as a sum of positive squares in 4 ways, for example, as 4398012956736 + 57342392770576 = 2097144^2 + 7572476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3089868 + ... + 11533780.

Almost surely, 2^{61740405727312} is an apocalyptic number.

It is an amenable number.

61740405727312 is an abundant number, since it is smaller than the sum of its proper divisors (67087005368792).

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

61740405727312 is a wasteful number, since it uses less digits than its factorization.

61740405727312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479087 (or 8479081 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 61740405727312 in words is "sixty-one trillion, seven hundred forty billion, four hundred five million, seven hundred twenty-seven thousand, three hundred twelve".