155004232240 has 80 divisors (see below), whose sum is σ = 423389213856. Its totient is φ = 52029388800.

The previous prime is 155004232237. The next prime is 155004232249. The reversal of 155004232240 is 42232400551.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 155004232199 and 155004232208.

It is not an unprimeable number, because it can be changed into a prime (155004232249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6763221 + ... + 6786100.

Almost surely, 2^155004232240 is an apocalyptic number.

155004232240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155004232240 is an abundant number, since it is smaller than the sum of its proper divisors (268384981616).

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

155004232240 is a wasteful number, since it uses less digits than its factorization.

155004232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13549358 (or 13549352 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 155004232240 its reverse (42232400551), we get a palindrome (197236632791).

The spelling of 155004232240 in words is "one hundred fifty-five billion, four million, two hundred thirty-two thousand, two hundred forty".