155251042143 has 4 divisors (see below), whose sum is σ = 207001389528. Its totient is φ = 103500694760.

The previous prime is 155251042127. The next prime is 155251042151. The reversal of 155251042143 is 341240152551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155251042143 - 2⁴ = 155251042127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155251042043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25875173688 + ... + 25875173693.

It is an arithmetic number, because the mean of its divisors is an integer number (51750347382).

Almost surely, 2^155251042143 is an apocalyptic number.

155251042143 is a deficient number, since it is larger than the sum of its proper divisors (51750347385).

155251042143 is an equidigital number, since it uses as much as digits as its factorization.

155251042143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51750347384.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 155251042143 its reverse (341240152551), we get a palindrome (496491194694).

The spelling of 155251042143 in words is "one hundred fifty-five billion, two hundred fifty-one million, forty-two thousand, one hundred forty-three".