20842800468 has 48 divisors (see below), whose sum is σ = 57997363200. Its totient is φ = 5696168544.

The previous prime is 20842800439. The next prime is 20842800497. The reversal of 20842800468 is 86400824802.

It is an interprime number because it is at equal distance from previous prime (20842800439) and next prime (20842800497).

It is a super-2 number, since 2×20842800468² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5392168 + ... + 5396031.

It is an arithmetic number, because the mean of its divisors is an integer number (1208278400).

Almost surely, 2^20842800468 is an apocalyptic number.

20842800468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20842800468 is an abundant number, since it is smaller than the sum of its proper divisors (37154562732).

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

20842800468 is a wasteful number, since it uses less digits than its factorization.

20842800468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788236 (or 10788234 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 20842800468 in words is "twenty billion, eight hundred forty-two million, eight hundred thousand, four hundred sixty-eight".