21362196547 has 2 divisors, whose sum is σ = 21362196548. Its totient is φ = 21362196546.

The previous prime is 21362196533. The next prime is 21362196553. The reversal of 21362196547 is 74569126312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21362196547 - 2²³ = 21353807939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21362196497 and 21362196506.

It is not a weakly prime, because it can be changed into another prime (21362196347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10681098273 + 10681098274.

It is an arithmetic number, because the mean of its divisors is an integer number (10681098274).

Almost surely, 2^21362196547 is an apocalyptic number.

21362196547 is a deficient number, since it is larger than the sum of its proper divisors (1).

21362196547 is an equidigital number, since it uses as much as digits as its factorization.

21362196547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The spelling of 21362196547 in words is "twenty-one billion, three hundred sixty-two million, one hundred ninety-six thousand, five hundred forty-seven".