155402020002 has 16 divisors (see below), whose sum is σ = 314548668000. Its totient is φ = 51176568672.

The previous prime is 155402020001. The next prime is 155402020003. The reversal of 155402020002 is 200020204551.

It is a happy number.

155402020002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155402020001) and next prime (155402020003).

It is not an unprimeable number, because it can be changed into a prime (155402020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156025627 + ... + 156026622.

It is an arithmetic number, because the mean of its divisors is an integer number (19659291750).

Almost surely, 2^155402020002 is an apocalyptic number.

155402020002 is an abundant number, since it is smaller than the sum of its proper divisors (159146647998).

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

155402020002 is a wasteful number, since it uses less digits than its factorization.

155402020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312052337.

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 155402020002 its reverse (200020204551), we get a palindrome (355422224553).

The spelling of 155402020002 in words is "one hundred fifty-five billion, four hundred two million, twenty thousand, two".