165087802980 has 144 divisors (see below), whose sum is σ = 513230635008. Its totient is φ = 42928704000.

The previous prime is 165087802973. The next prime is 165087802987. The reversal of 165087802980 is 89208780561.

It is an interprime number because it is at equal distance from previous prime (165087802973) and next prime (165087802987).

It is not an unprimeable number, because it can be changed into a prime (165087802987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20150685 + ... + 20158875.

It is an arithmetic number, because the mean of its divisors is an integer number (3564101632).

Almost surely, 2^165087802980 is an apocalyptic number.

165087802980 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 165087802980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256615317504).

165087802980 is an abundant number, since it is smaller than the sum of its proper divisors (348142832028).

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

165087802980 is a wasteful number, since it uses less digits than its factorization.

165087802980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10978 (or 10973 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 165087802980 in words is "one hundred sixty-five billion, eighty-seven million, eight hundred two thousand, nine hundred eighty".