20294469499 has 4 divisors (see below), whose sum is σ = 20298464064. Its totient is φ = 20290474936.

The previous prime is 20294469467. The next prime is 20294469617. The reversal of 20294469499 is 99496449202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20294469499 - 2⁵ = 20294469467 is a prime.

It is a super-2 number, since 2×20294469499² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20294469799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1989652 + ... + 1999825.

It is an arithmetic number, because the mean of its divisors is an integer number (5074616016).

Almost surely, 2^20294469499 is an apocalyptic number.

20294469499 is a deficient number, since it is larger than the sum of its proper divisors (3994565).

20294469499 is an equidigital number, since it uses as much as digits as its factorization.

20294469499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994564.

The product of its (nonzero) digits is 10077696, while the sum is 58.

The spelling of 20294469499 in words is "twenty billion, two hundred ninety-four million, four hundred sixty-nine thousand, four hundred ninety-nine".