621247686742126 has 8 divisors (see below), whose sum is σ = 935770574172960. Its totient is φ = 309324162017808.

The previous prime is 621247686742091. The next prime is 621247686742201.

It is a happy number.

621247686742126 is nontrivially palindromic in base 10.

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

It is a congruent number.

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, 649840676031 + ... + 649840676986.

It is an arithmetic number, because the mean of its divisors is an integer number (116971321771620).

Almost surely, 2^{621247686742126} is an apocalyptic number.

621247686742126 is a deficient number, since it is larger than the sum of its proper divisors (314522887430834).

621247686742126 is a wasteful number, since it uses less digits than its factorization.

621247686742126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299681353258.

The product of its digits is 130056192, while the sum is 64.

The spelling of 621247686742126 in words is "six hundred twenty-one trillion, two hundred forty-seven billion, six hundred eighty-six million, seven hundred forty-two thousand, one hundred twenty-six".