155843752438 has 8 divisors (see below), whose sum is σ = 255017049480. Its totient is φ = 70838069280.

The previous prime is 155843752423. The next prime is 155843752489. The reversal of 155843752438 is 834257348551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3541903443 + ... + 3541903486.

It is an arithmetic number, because the mean of its divisors is an integer number (31877131185).

Almost surely, 2^155843752438 is an apocalyptic number.

155843752438 is a deficient number, since it is larger than the sum of its proper divisors (99173297042).

155843752438 is a wasteful number, since it uses less digits than its factorization.

155843752438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083806942.

The product of its digits is 16128000, while the sum is 55.

The spelling of 155843752438 in words is "one hundred fifty-five billion, eight hundred forty-three million, seven hundred fifty-two thousand, four hundred thirty-eight".