155323654403 has 4 divisors (see below), whose sum is σ = 155432502120. Its totient is φ = 155214806688.

The previous prime is 155323654393. The next prime is 155323654411. The reversal of 155323654403 is 304456323551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155323654403 - 2⁸ = 155323654147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155323654103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54421718 + ... + 54424571.

It is an arithmetic number, because the mean of its divisors is an integer number (38858125530).

Almost surely, 2^155323654403 is an apocalyptic number.

155323654403 is a deficient number, since it is larger than the sum of its proper divisors (108847717).

155323654403 is a wasteful number, since it uses less digits than its factorization.

155323654403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108847716.

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 155323654403 its reverse (304456323551), we get a palindrome (459779977954).

The spelling of 155323654403 in words is "one hundred fifty-five billion, three hundred twenty-three million, six hundred fifty-four thousand, four hundred three".