15402224491 has 2 divisors, whose sum is σ = 15402224492. Its totient is φ = 15402224490.

The previous prime is 15402224489. The next prime is 15402224501. The reversal of 15402224491 is 19442220451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15402224491 - 2¹ = 15402224489 is a prime.

Together with 15402224489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15402204491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7701112245 + 7701112246.

It is an arithmetic number, because the mean of its divisors is an integer number (7701112246).

Almost surely, 2^15402224491 is an apocalyptic number.

15402224491 is a deficient number, since it is larger than the sum of its proper divisors (1).

15402224491 is an equidigital number, since it uses as much as digits as its factorization.

15402224491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 15402224491 in words is "fifteen billion, four hundred two million, two hundred twenty-four thousand, four hundred ninety-one".