20349694411 has 4 divisors (see below), whose sum is σ = 20415127824. Its totient is φ = 20284261000.

The previous prime is 20349694397. The next prime is 20349694427. The reversal of 20349694411 is 11449694302.

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 20349694411 - 2⁷ = 20349694283 is a prime.

It is a super-2 number, since 2×20349694411² (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 (20349694511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32716240 + ... + 32716861.

It is an arithmetic number, because the mean of its divisors is an integer number (5103781956).

Almost surely, 2^20349694411 is an apocalyptic number.

20349694411 is a deficient number, since it is larger than the sum of its proper divisors (65433413).

20349694411 is an equidigital number, since it uses as much as digits as its factorization.

20349694411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65433412.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 20349694411 in words is "twenty billion, three hundred forty-nine million, six hundred ninety-four thousand, four hundred eleven".