1861577473366 has 8 divisors (see below), whose sum is σ = 3007163610864. Its totient is φ = 859189603080.

The previous prime is 1861577473361. The next prime is 1861577473381. The reversal of 1861577473366 is 6633747751681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1861577473298 and 1861577473307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861577473361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35799566770 + ... + 35799566821.

It is an arithmetic number, because the mean of its divisors is an integer number (375895451358).

Almost surely, 2^{1861577473366} is an apocalyptic number.

1861577473366 is a deficient number, since it is larger than the sum of its proper divisors (1145586137498).

1861577473366 is a wasteful number, since it uses less digits than its factorization.

1861577473366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71599133606.

The product of its digits is 106686720, while the sum is 64.

The spelling of 1861577473366 in words is "one trillion, eight hundred sixty-one billion, five hundred seventy-seven million, four hundred seventy-three thousand, three hundred sixty-six".