201155433402 has 32 divisors (see below), whose sum is σ = 501582380544. Its totient is φ = 52248164400.

The previous prime is 201155433397. The next prime is 201155433509. The reversal of 201155433402 is 204334551102.

It is a self number, because there is not a number n which added to its sum of digits gives 201155433402.

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, 217700224 + ... + 217701147.

It is an arithmetic number, because the mean of its divisors is an integer number (15674449392).

Almost surely, 2^201155433402 is an apocalyptic number.

201155433402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201155433402 is an abundant number, since it is smaller than the sum of its proper divisors (300426947142).

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

201155433402 is a wasteful number, since it uses less digits than its factorization.

201155433402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435401394.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 201155433402 its reverse (204334551102), we get a palindrome (405489984504).

The spelling of 201155433402 in words is "two hundred one billion, one hundred fifty-five million, four hundred thirty-three thousand, four hundred two".