20474299611 has 14 divisors (see below), whose sum is σ = 30697407780. Its totient is φ = 13649532588.

The previous prime is 20474299609. The next prime is 20474299633. The reversal of 20474299611 is 11699247402.

20474299611 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 4 + 29 + 9 + 611 = 666.

It is not a de Polignac number, because 20474299611 - 2¹ = 20474299609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20474299511) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 14042001 + ... + 14043458.

Almost surely, 2^20474299611 is an apocalyptic number.

20474299611 is a deficient number, since it is larger than the sum of its proper divisors (10223108169).

20474299611 is an frugal number, since it uses more digits than its factorization.

20474299611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28085477 (or 28085462 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 20474299611 in words is "twenty billion, four hundred seventy-four million, two hundred ninety-nine thousand, six hundred eleven".