155352233440 has 48 divisors (see below), whose sum is σ = 367074327312. Its totient is φ = 62131636224.

The previous prime is 155352233437. The next prime is 155352233447. The reversal of 155352233440 is 44332253551.

It is a self number, because there is not a number n which added to its sum of digits gives 155352233440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155352233447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060327 + ... + 1197913.

It is an arithmetic number, because the mean of its divisors is an integer number (7647381819).

Almost surely, 2^155352233440 is an apocalyptic number.

155352233440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155352233440 is an abundant number, since it is smaller than the sum of its proper divisors (211722093872).

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

155352233440 is a wasteful number, since it uses less digits than its factorization.

155352233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144659 (or 144651 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 155352233440 its reverse (44332253551), we get a palindrome (199684486991).

The spelling of 155352233440 in words is "one hundred fifty-five billion, three hundred fifty-two million, two hundred thirty-three thousand, four hundred forty".