28150423465920 has 1344 divisors, whose sum is σ = 112362370891776. Its totient is φ = 5953656360960.

The previous prime is 28150423465909. The next prime is 28150423465921. The reversal of 28150423465920 is 2956432405182.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28150423465921) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11504054137 + ... + 11504056583.

Almost surely, 2^{28150423465920} is an apocalyptic number.

28150423465920 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 28150423465920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56181185445888).

28150423465920 is an abundant number, since it is smaller than the sum of its proper divisors (84211947425856).

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

28150423465920 is an equidigital number, since it uses as much as digits as its factorization.

28150423465920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2518 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 28150423465920 in words is "twenty-eight trillion, one hundred fifty billion, four hundred twenty-three million, four hundred sixty-five thousand, nine hundred twenty".