1641623312986 has 8 divisors (see below), whose sum is σ = 2464738466580. Its totient is φ = 820043824128.

The previous prime is 1641623312933. The next prime is 1641623312999. The reversal of 1641623312986 is 6892133261461.

It can be written as a sum of positive squares in 2 ways, for example, as 1585823897025 + 55799415961 = 1259295^2 + 236219^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383913511 + ... + 383917786.

Almost surely, 2^{1641623312986} is an apocalyptic number.

1641623312986 is a deficient number, since it is larger than the sum of its proper divisors (823115153594).

1641623312986 is a wasteful number, since it uses less digits than its factorization.

1641623312986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767832368.

The product of its digits is 2239488, while the sum is 52.

The spelling of 1641623312986 in words is "one trillion, six hundred forty-one billion, six hundred twenty-three million, three hundred twelve thousand, nine hundred eighty-six".