10391967401 has 2 divisors, whose sum is σ = 10391967402. Its totient is φ = 10391967400.

The previous prime is 10391967323. The next prime is 10391967409. The reversal of 10391967401 is 10476919301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9515807401 + 876160000 = 97549^2 + 29600^2 .

It is an emirp because it is prime and its reverse (10476919301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10391967401 is a prime.

It is not a weakly prime, because it can be changed into another prime (10391967409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5195983700 + 5195983701.

It is an arithmetic number, because the mean of its divisors is an integer number (5195983701).

Almost surely, 2^10391967401 is an apocalyptic number.

It is an amenable number.

10391967401 is a deficient number, since it is larger than the sum of its proper divisors (1).

10391967401 is an equidigital number, since it uses as much as digits as its factorization.

10391967401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 10391967401 in words is "ten billion, three hundred ninety-one million, nine hundred sixty-seven thousand, four hundred one".