11172472542 has 48 divisors (see below), whose sum is σ = 30180189312. Its totient is φ = 2901940560.

The previous prime is 11172472499. The next prime is 11172472559. The reversal of 11172472542 is 24527427111.

11172472542 is a `hidden beast` number, since 1 + 1 + 1 + 72 + 47 + 2 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11172472497 and 11172472506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4029088 + ... + 4031859.

It is an arithmetic number, because the mean of its divisors is an integer number (628753944).

Almost surely, 2^11172472542 is an apocalyptic number.

11172472542 is an abundant number, since it is smaller than the sum of its proper divisors (19007716770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11172472542 is a wasteful number, since it uses less digits than its factorization.

11172472542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060973 (or 8060970 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

Adding to 11172472542 its reverse (24527427111), we get a palindrome (35699899653).

The spelling of 11172472542 in words is "eleven billion, one hundred seventy-two million, four hundred seventy-two thousand, five hundred forty-two".