155023513124 has 6 divisors (see below), whose sum is σ = 271291147974. Its totient is φ = 77511756560.

The previous prime is 155023513121. The next prime is 155023513163. The reversal of 155023513124 is 421315320551.

It can be written as a sum of positive squares in only one way, i.e., 121255775524 + 33767737600 = 348218^2 + 183760^2 .

It is not an unprimeable number, because it can be changed into a prime (155023513121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19377939137 + ... + 19377939144.

It is an arithmetic number, because the mean of its divisors is an integer number (45215191329).

Almost surely, 2^155023513124 is an apocalyptic number.

It is an amenable number.

155023513124 is a deficient number, since it is larger than the sum of its proper divisors (116267634850).

155023513124 is a wasteful number, since it uses less digits than its factorization.

155023513124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38755878285 (or 38755878283 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 155023513124 its reverse (421315320551), we get a palindrome (576338833675).

The spelling of 155023513124 in words is "one hundred fifty-five billion, twenty-three million, five hundred thirteen thousand, one hundred twenty-four".