20828131186548 has 96 divisors (see below), whose sum is σ = 58814029096704. Its totient is φ = 5600347895808.

The previous prime is 20828131186507. The next prime is 20828131186553. The reversal of 20828131186548 is 84568113182802.

It is a super-2 number, since 2×20828131186548² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 15694390 + ... + 16969682.

It is an arithmetic number, because the mean of its divisors is an integer number (612646136424).

Almost surely, 2^{20828131186548} is an apocalyptic number.

20828131186548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20828131186548 is an abundant number, since it is smaller than the sum of its proper divisors (37985897910156).

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

20828131186548 is a wasteful number, since it uses less digits than its factorization.

20828131186548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286761 (or 1286759 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 57.

The spelling of 20828131186548 in words is "twenty trillion, eight hundred twenty-eight billion, one hundred thirty-one million, one hundred eighty-six thousand, five hundred forty-eight".