27155145242 has 16 divisors (see below), whose sum is σ = 40907221992. Its totient is φ = 13519511040.

The previous prime is 27155145239. The next prime is 27155145271. The reversal of 27155145242 is 24254155172.

It can be written as a sum of positive squares in 4 ways, for example, as 17069161201 + 10085984041 = 130649^2 + 100429^2 .

It is a super-2 number, since 2×27155145242² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27155145196 and 27155145205.

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, 494942 + ... + 547062.

Almost surely, 2^27155145242 is an apocalyptic number.

27155145242 is a deficient number, since it is larger than the sum of its proper divisors (13752076750).

27155145242 is a wasteful number, since it uses less digits than its factorization.

27155145242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53233.

The product of its digits is 112000, while the sum is 38.

The spelling of 27155145242 in words is "twenty-seven billion, one hundred fifty-five million, one hundred forty-five thousand, two hundred forty-two".