201155042000 has 80 divisors (see below), whose sum is σ = 530610485184. Its totient is φ = 73147280000.

The previous prime is 201155041999. The next prime is 201155042029. The reversal of 201155042000 is 240551102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 4549706 + ... + 4593705.

Almost surely, 2^201155042000 is an apocalyptic number.

201155042000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201155042000 is an abundant number, since it is smaller than the sum of its proper divisors (329455443184).

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

201155042000 is a wasteful number, since it uses less digits than its factorization.

201155042000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9143445 (or 9143429 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 201155042000 its reverse (240551102), we get a palindrome (201395593102).

The spelling of 201155042000 in words is "two hundred one billion, one hundred fifty-five million, forty-two thousand".