61727783346 has 32 divisors (see below), whose sum is σ = 137193016320. Its totient is φ = 20572903152.

The previous prime is 61727783323. The next prime is 61727783363. The reversal of 61727783346 is 64338772716.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 61727783292 and 61727783301.

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, 303096 + ... + 464028.

It is an arithmetic number, because the mean of its divisors is an integer number (4287281760).

Almost surely, 2^61727783346 is an apocalyptic number.

61727783346 is an abundant number, since it is smaller than the sum of its proper divisors (75465232974).

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

61727783346 is a wasteful number, since it uses less digits than its factorization.

61727783346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168047 (or 168041 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 61727783346 in words is "sixty-one billion, seven hundred twenty-seven million, seven hundred eighty-three thousand, three hundred forty-six".