155313503120 has 40 divisors (see below), whose sum is σ = 361129475520. Its totient is φ = 62121000320.

The previous prime is 155313503099. The next prime is 155313503141. The reversal of 155313503120 is 21305313551.

It is a happy number.

155313503120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155313503099) and next prime (155313503141).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216901 + ... + 1338459.

It is an arithmetic number, because the mean of its divisors is an integer number (9028236888).

Almost surely, 2^155313503120 is an apocalyptic number.

155313503120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155313503120 is an abundant number, since it is smaller than the sum of its proper divisors (205815972400).

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

155313503120 is a wasteful number, since it uses less digits than its factorization.

155313503120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137543 (or 137537 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 155313503120 its reverse (21305313551), we get a palindrome (176618816671).

The spelling of 155313503120 in words is "one hundred fifty-five billion, three hundred thirteen million, five hundred three thousand, one hundred twenty".