15243401552542 has 16 divisors (see below), whose sum is σ = 22891426796160. Its totient is φ = 7612927002072.

The previous prime is 15243401552539. The next prime is 15243401552567. The reversal of 15243401552542 is 24525510434251.

15243401552542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15243401552542² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29821773 + ... + 30328615.

It is an arithmetic number, because the mean of its divisors is an integer number (1430714174760).

Almost surely, 2^{15243401552542} is an apocalyptic number.

15243401552542 is a deficient number, since it is larger than the sum of its proper divisors (7648025243618).

15243401552542 is a wasteful number, since it uses less digits than its factorization.

15243401552542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524127.

The product of its (nonzero) digits is 960000, while the sum is 43.

Adding to 15243401552542 its reverse (24525510434251), we get a palindrome (39768911986793).

The spelling of 15243401552542 in words is "fifteen trillion, two hundred forty-three billion, four hundred one million, five hundred fifty-two thousand, five hundred forty-two".