61280308368 has 30 divisors (see below), whose sum is σ = 171499752294. Its totient is φ = 20426769408.

The previous prime is 61280308363. The next prime is 61280308379. The reversal of 61280308368 is 86380308216.

61280308368 is a `hidden beast` number, since 6 + 1 + 280 + 3 + 0 + 8 + 368 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46868786064 + 14411522304 = 216492^2 + 120048^2 .

It is not an unprimeable number, because it can be changed into a prime (61280308363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212778705 + ... + 212778992.

Almost surely, 2^61280308368 is an apocalyptic number.

It is an amenable number.

61280308368 is an abundant number, since it is smaller than the sum of its proper divisors (110219443926).

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

61280308368 is a wasteful number, since it uses less digits than its factorization.

61280308368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425557711 (or 425557702 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 61280308368 in words is "sixty-one billion, two hundred eighty million, three hundred eight thousand, three hundred sixty-eight".