21735350759 has 2 divisors, whose sum is σ = 21735350760. Its totient is φ = 21735350758.

The previous prime is 21735350723. The next prime is 21735350779. The reversal of 21735350759 is 95705353712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21735350759 - 2¹² = 21735346663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21735350719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10867675379 + 10867675380.

It is an arithmetic number, because the mean of its divisors is an integer number (10867675380).

Almost surely, 2^21735350759 is an apocalyptic number.

21735350759 is a deficient number, since it is larger than the sum of its proper divisors (1).

21735350759 is an equidigital number, since it uses as much as digits as its factorization.

21735350759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 992250, while the sum is 47.

The spelling of 21735350759 in words is "twenty-one billion, seven hundred thirty-five million, three hundred fifty thousand, seven hundred fifty-nine".