621680086126 has 16 divisors (see below), whose sum is σ = 1061524891008. Its totient is φ = 270295689400.

The previous prime is 621680086091. The next prime is 621680086147.

621680086126 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×621680086126² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614307880 + ... + 614308891.

It is an arithmetic number, because the mean of its divisors is an integer number (66345305688).

Almost surely, 2^621680086126 is an apocalyptic number.

621680086126 is a deficient number, since it is larger than the sum of its proper divisors (439844804882).

621680086126 is a wasteful number, since it uses less digits than its factorization.

621680086126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228616807.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 621680086126 in words is "six hundred twenty-one billion, six hundred eighty million, eighty-six thousand, one hundred twenty-six".