82103066690 has 16 divisors (see below), whose sum is σ = 147792229560. Its totient is φ = 32839735680.

The previous prime is 82103066687. The next prime is 82103066729. The reversal of 82103066690 is 9666030128.

It can be written as a sum of positive squares in 4 ways, for example, as 68315845129 + 13787221561 = 261373^2 + 117419^2 .

It is a super-2 number, since 2×82103066690² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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, 60470 + ... + 409710.

Almost surely, 2^82103066690 is an apocalyptic number.

82103066690 is a deficient number, since it is larger than the sum of its proper divisors (65689162870).

82103066690 is a wasteful number, since it uses less digits than its factorization.

82103066690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372757.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 82103066690 in words is "eighty-two billion, one hundred three million, sixty-six thousand, six hundred ninety".