165276780480 has 1176 divisors, whose sum is σ = 723494036880. Its totient is φ = 35742228480.

The previous prime is 165276780443. The next prime is 165276780491. The reversal of 165276780480 is 84087672561.

165276780480 is a `hidden beast` number, since 1 + 6 + 5 + 27 + 67 + 80 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (1176).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 217183300 + ... + 217184060.

Almost surely, 2^165276780480 is an apocalyptic number.

165276780480 is a gapful number since it is divisible by the number (10) 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 165276780480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361747018440).

165276780480 is an abundant number, since it is smaller than the sum of its proper divisors (558217256400).

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

165276780480 is an equidigital number, since it uses as much as digits as its factorization.

165276780480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 165276780480 in words is "one hundred sixty-five billion, two hundred seventy-six million, seven hundred eighty thousand, four hundred eighty".