21035299763 has 2 divisors, whose sum is σ = 21035299764. Its totient is φ = 21035299762.

The previous prime is 21035299759. The next prime is 21035299781. The reversal of 21035299763 is 36799253012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21035299763 - 2² = 21035299759 is a prime.

It is a super-2 number, since 2×21035299763² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21035299063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517649881 + 10517649882.

It is an arithmetic number, because the mean of its divisors is an integer number (10517649882).

Almost surely, 2^21035299763 is an apocalyptic number.

21035299763 is a deficient number, since it is larger than the sum of its proper divisors (1).

21035299763 is an equidigital number, since it uses as much as digits as its factorization.

21035299763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 21035299763 in words is "twenty-one billion, thirty-five million, two hundred ninety-nine thousand, seven hundred sixty-three".