20866151348 has 48 divisors (see below), whose sum is σ = 43957562880. Its totient is φ = 8466412896.

The previous prime is 20866151323. The next prime is 20866151351. The reversal of 20866151348 is 84315166802.

It is a junction number, because it is equal to n+sod(n) for n = 20866151299 and 20866151308.

It is a congruent number.

It is an unprimeable number.

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, 853511 + ... + 877617.

It is an arithmetic number, because the mean of its divisors is an integer number (915782560).

Almost surely, 2^20866151348 is an apocalyptic number.

20866151348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20866151348 is an abundant number, since it is smaller than the sum of its proper divisors (23091411532).

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

20866151348 is a wasteful number, since it uses less digits than its factorization.

20866151348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25764 (or 25762 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 20866151348 in words is "twenty billion, eight hundred sixty-six million, one hundred fifty-one thousand, three hundred forty-eight".