20208410847 has 16 divisors (see below), whose sum is σ = 30057672960. Its totient is φ = 13418595000.

The previous prime is 20208410839. The next prime is 20208410897. The reversal of 20208410847 is 74801480202.

It is not a de Polignac number, because 20208410847 - 2³ = 20208410839 is a prime.

It is a super-2 number, since 2×20208410847² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20208410897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1484179 + ... + 1497732.

It is an arithmetic number, because the mean of its divisors is an integer number (1878604560).

Almost surely, 2^20208410847 is an apocalyptic number.

20208410847 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20208410847 is a deficient number, since it is larger than the sum of its proper divisors (9849262113).

20208410847 is a wasteful number, since it uses less digits than its factorization.

20208410847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982171 (or 2982165 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The spelling of 20208410847 in words is "twenty billion, two hundred eight million, four hundred ten thousand, eight hundred forty-seven".