28151869860000 has 360 divisors, whose sum is σ = 100303275552480. Its totient is φ = 7487339328000.

The previous prime is 28151869859989. The next prime is 28151869860041. The reversal of 28151869860000 is 6896815182.

It is a happy number.

28151869860000 is a `hidden beast` number, since 2 + 8 + 1 + 518 + 69 + 8 + 60 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×28151869860000² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 68013669 + ... + 68426331.

It is an arithmetic number, because the mean of its divisors is an integer number (278620209868).

Almost surely, 2^{28151869860000} is an apocalyptic number.

28151869860000 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 28151869860000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50151637776240).

28151869860000 is an abundant number, since it is smaller than the sum of its proper divisors (72151405692480).

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

28151869860000 is a wasteful number, since it uses less digits than its factorization.

28151869860000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413078 (or 413052 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 28151869860000 in words is "twenty-eight trillion, one hundred fifty-one billion, eight hundred sixty-nine million, eight hundred sixty thousand".