28146969452544 has 224 divisors, whose sum is σ = 77761188648000. Its totient is φ = 9044897562624.

The previous prime is 28146969452533. The next prime is 28146969452603. The reversal of 28146969452544 is 44525496964182.

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, 469641972 + ... + 469701900.

Almost surely, 2^{28146969452544} is an apocalyptic number.

28146969452544 is a gapful number since it is divisible by the number (24) 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 28146969452544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38880594324000).

28146969452544 is an abundant number, since it is smaller than the sum of its proper divisors (49614219195456).

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

28146969452544 is an equidigital number, since it uses as much as digits as its factorization.

28146969452544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60646 (or 60622 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 69.

The spelling of 28146969452544 in words is "twenty-eight trillion, one hundred forty-six billion, nine hundred sixty-nine million, four hundred fifty-two thousand, five hundred forty-four".