10129936549 has 2 divisors, whose sum is σ = 10129936550. Its totient is φ = 10129936548.

The previous prime is 10129936511. The next prime is 10129936639. The reversal of 10129936549 is 94563992101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5081123524 + 5048813025 = 71282^2 + 71055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10129936549 is a prime.

It is a super-2 number, since 2×10129936549² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10123936549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064968274 + 5064968275.

It is an arithmetic number, because the mean of its divisors is an integer number (5064968275).

Almost surely, 2^10129936549 is an apocalyptic number.

It is an amenable number.

10129936549 is a deficient number, since it is larger than the sum of its proper divisors (1).

10129936549 is an equidigital number, since it uses as much as digits as its factorization.

10129936549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 10129936549 in words is "ten billion, one hundred twenty-nine million, nine hundred thirty-six thousand, five hundred forty-nine".