28216959695040 has 112 divisors (see below), whose sum is σ = 89674254280800. Its totient is φ = 7517349273600.

The previous prime is 28216959695009. The next prime is 28216959695051. The reversal of 28216959695040 is 4059695961282.

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, 13002811 + ... + 15016890.

It is an arithmetic number, because the mean of its divisors is an integer number (800662984650).

Almost surely, 2^{28216959695040} is an apocalyptic number.

28216959695040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28216959695040 is an abundant number, since it is smaller than the sum of its proper divisors (61457294585760).

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

28216959695040 is a wasteful number, since it uses less digits than its factorization.

28216959695040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28020770 (or 28020760 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 66.

The spelling of 28216959695040 in words is "twenty-eight trillion, two hundred sixteen billion, nine hundred fifty-nine million, six hundred ninety-five thousand, forty".