28909610843568 has 240 divisors, whose sum is σ = 96577164665856. Its totient is φ = 7378560483840.

The previous prime is 28909610843557. The next prime is 28909610843591. The reversal of 28909610843568 is 86534801690982.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14302146 + ... + 16197857.

Almost surely, 2^{28909610843568} is an apocalyptic number.

28909610843568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28909610843568 is an abundant number, since it is smaller than the sum of its proper divisors (67667553822288).

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

28909610843568 is a wasteful number, since it uses less digits than its factorization.

28909610843568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30500072 (or 30500059 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 69.

The spelling of 28909610843568 in words is "twenty-eight trillion, nine hundred nine billion, six hundred ten million, eight hundred forty-three thousand, five hundred sixty-eight".