155243700393 has 24 divisors (see below), whose sum is σ = 214674461568. Its totient is φ = 99787140000.

The previous prime is 155243700379. The next prime is 155243700467. The reversal of 155243700393 is 393007342551.

It is not a de Polignac number, because 155243700393 - 2⁶ = 155243700329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155243700373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 681943 + ... + 880643.

It is an arithmetic number, because the mean of its divisors is an integer number (8944769232).

Almost surely, 2^155243700393 is an apocalyptic number.

It is an amenable number.

155243700393 is a deficient number, since it is larger than the sum of its proper divisors (59430761175).

155243700393 is a wasteful number, since it uses less digits than its factorization.

155243700393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199037 (or 199006 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 42.

The spelling of 155243700393 in words is "one hundred fifty-five billion, two hundred forty-three million, seven hundred thousand, three hundred ninety-three".