155525440432 has 20 divisors (see below), whose sum is σ = 304437044296. Its totient is φ = 76961041920.

The previous prime is 155525440361. The next prime is 155525440439. The reversal of 155525440432 is 234044525551.

It is not an unprimeable number, because it can be changed into a prime (155525440439) 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, 50103294 + ... + 50106397.

Almost surely, 2^155525440432 is an apocalyptic number.

It is an amenable number.

155525440432 is a deficient number, since it is larger than the sum of its proper divisors (148911603864).

155525440432 is a wasteful number, since it uses less digits than its factorization.

155525440432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100209796 (or 100209790 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 155525440432 its reverse (234044525551), we get a palindrome (389569965983).

The spelling of 155525440432 in words is "one hundred fifty-five billion, five hundred twenty-five million, four hundred forty thousand, four hundred thirty-two".