155000004434 has 32 divisors (see below), whose sum is σ = 261047826432. Its totient is φ = 68425434000.

The previous prime is 155000004407. The next prime is 155000004443. The reversal of 155000004434 is 434400000551.

It is a Curzon number.

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, 635882 + ... + 845189.

It is an arithmetic number, because the mean of its divisors is an integer number (8157744576).

Almost surely, 2^155000004434 is an apocalyptic number.

155000004434 is a deficient number, since it is larger than the sum of its proper divisors (106047821998).

155000004434 is a wasteful number, since it uses less digits than its factorization.

155000004434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481222.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 155000004434 its reverse (434400000551), we get a palindrome (589400004985).

The spelling of 155000004434 in words is "one hundred fifty-five billion, four thousand, four hundred thirty-four".