10139061661 has 2 divisors, whose sum is σ = 10139061662. Its totient is φ = 10139061660.

The previous prime is 10139061629. The next prime is 10139061679. The reversal of 10139061661 is 16616093101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6840282436 + 3298779225 = 82706^2 + 57435^2 .

It is a cyclic number.

It is not a de Polignac number, because 10139061661 - 2⁵ = 10139061629 is a prime.

It is a super-3 number, since 3×10139061661³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10139061061) by changing a digit.

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 as a sum of consecutive naturals, namely, 5069530830 + 5069530831.

It is an arithmetic number, because the mean of its divisors is an integer number (5069530831).

Almost surely, 2^10139061661 is an apocalyptic number.

It is an amenable number.

10139061661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10139061661 is an equidigital number, since it uses as much as digits as its factorization.

10139061661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 10139061661 in words is "ten billion, one hundred thirty-nine million, sixty-one thousand, six hundred sixty-one".