155033201220402 has 32 divisors (see below), whose sum is σ = 310801927521600. Its totient is φ = 51555228815168.

The previous prime is 155033201220389. The next prime is 155033201220421. The reversal of 155033201220402 is 204022102330551.

It is a self number, because there is not a number n which added to its sum of digits gives 155033201220402.

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, 2812293 + ... + 17831864.

It is an arithmetic number, because the mean of its divisors is an integer number (9712560235050).

Almost surely, 2^{155033201220402} is an apocalyptic number.

155033201220402 is an abundant number, since it is smaller than the sum of its proper divisors (155768726301198).

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

155033201220402 is a wasteful number, since it uses less digits than its factorization.

155033201220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20647130.

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

Adding to 155033201220402 its reverse (204022102330551), we get a palindrome (359055303550953).

The spelling of 155033201220402 in words is "one hundred fifty-five trillion, thirty-three billion, two hundred one million, two hundred twenty thousand, four hundred two".