10139507460521 has 2 divisors, whose sum is σ = 10139507460522. Its totient is φ = 10139507460520.

The previous prime is 10139507460493. The next prime is 10139507460539. The reversal of 10139507460521 is 12506470593101.

10139507460521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8679122221225 + 1460385239296 = 2946035^2 + 1208464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10139507460521 is a prime.

It is a super-2 number, since 2×10139507460521² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10139507463521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069753730260 + 5069753730261.

It is an arithmetic number, because the mean of its divisors is an integer number (5069753730261).

Almost surely, 2^{10139507460521} is an apocalyptic number.

It is an amenable number.

10139507460521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10139507460521 is an equidigital number, since it uses as much as digits as its factorization.

10139507460521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 10139507460521 in words is "ten trillion, one hundred thirty-nine billion, five hundred seven million, four hundred sixty thousand, five hundred twenty-one".