1181471431464 has 96 divisors (see below), whose sum is σ = 3214941649920. Its totient is φ = 391963356288.

The previous prime is 1181471431451. The next prime is 1181471431493. The reversal of 1181471431464 is 4641341741811.

1181471431464 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 47 + 143 + 1 + 464 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106558129 + ... + 106569215.

It is an arithmetic number, because the mean of its divisors is an integer number (33488975520).

Almost surely, 2^{1181471431464} is an apocalyptic number.

It is an amenable number.

1181471431464 is an abundant number, since it is smaller than the sum of its proper divisors (2033470218456).

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

1181471431464 is a wasteful number, since it uses less digits than its factorization.

1181471431464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17959 (or 17952 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 1181471431464 in words is "one trillion, one hundred eighty-one billion, four hundred seventy-one million, four hundred thirty-one thousand, four hundred sixty-four".