82668474668762 has 16 divisors (see below), whose sum is σ = 124468921541160. Its totient is φ = 41178847076352.

The previous prime is 82668474668743. The next prime is 82668474668777. The reversal of 82668474668762 is 26786647486628.

It can be written as a sum of positive squares in 4 ways, for example, as 64973739875641 + 17694734793121 = 8060629^2 + 4206511^2 .

It is a super-2 number, since 2×82668474668762² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9625418 + ... + 16061930.

Almost surely, 2^{82668474668762} is an apocalyptic number.

82668474668762 is a deficient number, since it is larger than the sum of its proper divisors (41800446872398).

82668474668762 is a wasteful number, since it uses less digits than its factorization.

82668474668762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460657.

The product of its digits is 12485394432, while the sum is 80.

The spelling of 82668474668762 in words is "eighty-two trillion, six hundred sixty-eight billion, four hundred seventy-four million, six hundred sixty-eight thousand, seven hundred sixty-two".