20949201147 has 16 divisors (see below), whose sum is σ = 32445915392. Its totient is φ = 11774725920.

The previous prime is 20949201137. The next prime is 20949201151. The reversal of 20949201147 is 74110294902.

It is not a de Polignac number, because 20949201147 - 2⁴ = 20949201131 is a prime.

It is a super-2 number, since 2×20949201147² (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 (20949201107) 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 15 ways as a sum of consecutive naturals, for example, 8175613 + ... + 8178174.

It is an arithmetic number, because the mean of its divisors is an integer number (2027869712).

Almost surely, 2^20949201147 is an apocalyptic number.

20949201147 is a deficient number, since it is larger than the sum of its proper divisors (11496714245).

20949201147 is a wasteful number, since it uses less digits than its factorization.

20949201147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16353858.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 20949201147 in words is "twenty billion, nine hundred forty-nine million, two hundred one thousand, one hundred forty-seven".