201650155520 has 208 divisors, whose sum is σ = 555687924480. Its totient is φ = 69466521600.

The previous prime is 201650155507. The next prime is 201650155529. The reversal of 201650155520 is 25551056102.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (201650155529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4256765 + ... + 4303875.

It is an arithmetic number, because the mean of its divisors is an integer number (2671576560).

Almost surely, 2^201650155520 is an apocalyptic number.

201650155520 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 201650155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277843962240).

201650155520 is an abundant number, since it is smaller than the sum of its proper divisors (354037768960).

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

201650155520 is a wasteful number, since it uses less digits than its factorization.

201650155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47170 (or 47148 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 201650155520 in words is "two hundred one billion, six hundred fifty million, one hundred fifty-five thousand, five hundred twenty".