10721946253 has 2 divisors, whose sum is σ = 10721946254. Its totient is φ = 10721946252.

The previous prime is 10721946229. The next prime is 10721946293. The reversal of 10721946253 is 35264912701.

It is a happy number.

It is an a-pointer prime, because the next prime (10721946293) can be obtained adding 10721946253 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10152980644 + 568965609 = 100762^2 + 23853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10721946253 is a prime.

It is a super-2 number, since 2×10721946253² (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 (10721946293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360973126 + 5360973127.

It is an arithmetic number, because the mean of its divisors is an integer number (5360973127).

Almost surely, 2^10721946253 is an apocalyptic number.

It is an amenable number.

10721946253 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721946253 is an equidigital number, since it uses as much as digits as its factorization.

10721946253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 10721946253 in words is "ten billion, seven hundred twenty-one million, nine hundred forty-six thousand, two hundred fifty-three".