153531125535542 has 4 divisors (see below), whose sum is σ = 230296688303316. Its totient is φ = 76765562767770.

The previous prime is 153531125535493. The next prime is 153531125535551. The reversal of 153531125535542 is 245535521135351.

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

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, 38382781383884 + ... + 38382781383887.

It is an arithmetic number, because the mean of its divisors is an integer number (57574172075829).

Almost surely, 2^{153531125535542} is an apocalyptic number.

153531125535542 is a deficient number, since it is larger than the sum of its proper divisors (76765562767774).

153531125535542 is an equidigital number, since it uses as much as digits as its factorization.

153531125535542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76765562767773.

The product of its digits is 6750000, while the sum is 50.

The spelling of 153531125535542 in words is "one hundred fifty-three trillion, five hundred thirty-one billion, one hundred twenty-five million, five hundred thirty-five thousand, five hundred forty-two".