155020613403 has 16 divisors (see below), whose sum is σ = 206969469696. Its totient is φ = 103209514080.

The previous prime is 155020613351. The next prime is 155020613413. The reversal of 155020613403 is 304316020551.

It is a de Polignac number, because none of the positive numbers 2^k-155020613403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155020613413) 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, 7261501 + ... + 7282817.

It is an arithmetic number, because the mean of its divisors is an integer number (12935591856).

Almost surely, 2^155020613403 is an apocalyptic number.

155020613403 is a deficient number, since it is larger than the sum of its proper divisors (51948856293).

155020613403 is a wasteful number, since it uses less digits than its factorization.

155020613403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24434.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 155020613403 its reverse (304316020551), we get a palindrome (459336633954).

The spelling of 155020613403 in words is "one hundred fifty-five billion, twenty million, six hundred thirteen thousand, four hundred three".