20470400160 has 192 divisors, whose sum is σ = 73890496512. Its totient is φ = 4666438656.

The previous prime is 20470400117. The next prime is 20470400219. The reversal of 20470400160 is 6100407402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20470400160.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1278927 + ... + 1294833.

It is an arithmetic number, because the mean of its divisors is an integer number (384846336).

Almost surely, 2^20470400160 is an apocalyptic number.

20470400160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20470400160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36945248256).

20470400160 is an abundant number, since it is smaller than the sum of its proper divisors (53420096352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20470400160 is a wasteful number, since it uses less digits than its factorization.

20470400160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315 (or 16307 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 20470400160 its reverse (6100407402), we get a palindrome (26570807562).

The spelling of 20470400160 in words is "twenty billion, four hundred seventy million, four hundred thousand, one hundred sixty".