1181551440147 has 64 divisors (see below), whose sum is σ = 1843455075840. Its totient is φ = 666592303104.

The previous prime is 1181551440137. The next prime is 1181551440221. The reversal of 1181551440147 is 7410441551811.

It is not a de Polignac number, because 1181551440147 - 2⁴ = 1181551440131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1181551440099 and 1181551440108.

It is not an unprimeable number, because it can be changed into a prime (1181551440137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4763368 + ... + 5005274.

It is an arithmetic number, because the mean of its divisors is an integer number (28803985560).

Almost surely, 2^{1181551440147} is an apocalyptic number.

1181551440147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1181551440147 is a deficient number, since it is larger than the sum of its proper divisors (661903635693).

1181551440147 is a wasteful number, since it uses less digits than its factorization.

1181551440147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242132.

The product of its (nonzero) digits is 89600, while the sum is 42.

Adding to 1181551440147 its reverse (7410441551811), we get a palindrome (8591992991958).

The spelling of 1181551440147 in words is "one trillion, one hundred eighty-one billion, five hundred fifty-one million, four hundred forty thousand, one hundred forty-seven".