155240452432 has 40 divisors (see below), whose sum is σ = 340963350560. Its totient is φ = 67878414720.

The previous prime is 155240452429. The next prime is 155240452531. The reversal of 155240452432 is 234254042551.

It is a junction number, because it is equal to n+sod(n) for n = 155240452391 and 155240452400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19636794 + ... + 19644697.

It is an arithmetic number, because the mean of its divisors is an integer number (8524083764).

Almost surely, 2^155240452432 is an apocalyptic number.

It is an amenable number.

155240452432 is an abundant number, since it is smaller than the sum of its proper divisors (185722898128).

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

155240452432 is a wasteful number, since it uses less digits than its factorization.

155240452432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39281531 (or 39281525 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 155240452432 its reverse (234254042551), we get a palindrome (389494494983).

The spelling of 155240452432 in words is "one hundred fifty-five billion, two hundred forty million, four hundred fifty-two thousand, four hundred thirty-two".