155005623604240 has 40 divisors (see below), whose sum is σ = 363018644795160. Its totient is φ = 61549678273536.

The previous prime is 155005623604229. The next prime is 155005623604243. The reversal of 155005623604240 is 42406326500551.

It can be written as a sum of positive squares in 4 ways, for example, as 45253013345296 + 109752610258944 = 6727036^2 + 10476288^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (155005623604243) 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, 7071413475 + ... + 7071435394.

It is an arithmetic number, because the mean of its divisors is an integer number (9075466119879).

Almost surely, 2^{155005623604240} is an apocalyptic number.

155005623604240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155005623604240 is an abundant number, since it is smaller than the sum of its proper divisors (208013021190920).

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

155005623604240 is a wasteful number, since it uses less digits than its factorization.

155005623604240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14142849019 (or 14142849013 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 155005623604240 in words is "one hundred fifty-five trillion, five billion, six hundred twenty-three million, six hundred four thousand, two hundred forty".