13621653407 has 2 divisors, whose sum is σ = 13621653408. Its totient is φ = 13621653406.

The previous prime is 13621653403. The next prime is 13621653431. The reversal of 13621653407 is 70435612631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13621653407 - 2² = 13621653403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13621653403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810826703 + 6810826704.

It is an arithmetic number, because the mean of its divisors is an integer number (6810826704).

Almost surely, 2^13621653407 is an apocalyptic number.

13621653407 is a deficient number, since it is larger than the sum of its proper divisors (1).

13621653407 is an equidigital number, since it uses as much as digits as its factorization.

13621653407 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 38.

The spelling of 13621653407 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, four hundred seven".