155501228342 has 4 divisors (see below), whose sum is σ = 233251842516. Its totient is φ = 77750614170.

The previous prime is 155501228317. The next prime is 155501228353. The reversal of 155501228342 is 243822105551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243822105551 = 29443 ⋅8281157.

It is a junction number, because it is equal to n+sod(n) for n = 155501228296 and 155501228305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38875307084 + ... + 38875307087.

It is an arithmetic number, because the mean of its divisors is an integer number (58312960629).

Almost surely, 2^155501228342 is an apocalyptic number.

155501228342 is a deficient number, since it is larger than the sum of its proper divisors (77750614174).

155501228342 is an equidigital number, since it uses as much as digits as its factorization.

155501228342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77750614173.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 155501228342 in words is "one hundred fifty-five billion, five hundred one million, two hundred twenty-eight thousand, three hundred forty-two".