178149185042 has 16 divisors (see below), whose sum is σ = 283093988472. Its totient is φ = 83790120960.

The previous prime is 178149185003. The next prime is 178149185051. The reversal of 178149185042 is 240581941871.

It can be written as a sum of positive squares in 4 ways, for example, as 130999839721 + 47149345321 = 361939^2 + 217139^2 .

It is a super-2 number, since 2×178149185042² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335059 + ... + 1462422.

Almost surely, 2^178149185042 is an apocalyptic number.

178149185042 is a deficient number, since it is larger than the sum of its proper divisors (104944803430).

178149185042 is a wasteful number, since it uses less digits than its factorization.

178149185042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799373.

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 178149185042 in words is "one hundred seventy-eight billion, one hundred forty-nine million, one hundred eighty-five thousand, forty-two".