1151173981979 has 48 divisors (see below), whose sum is σ = 1500898053600. Its totient is φ = 875801558016.

The previous prime is 1151173981931. The next prime is 1151173982033. The reversal of 1151173981979 is 9791893711511.

It is not a de Polignac number, because 1151173981979 - 2⁸ = 1151173981723 is a prime.

It is a super-4 number, since 4×1151173981979⁴ (a number of 49 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1151173981579) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 484637 + ... + 1592865.

It is an arithmetic number, because the mean of its divisors is an integer number (31268709450).

Almost surely, 2^{1151173981979} is an apocalyptic number.

1151173981979 is a deficient number, since it is larger than the sum of its proper divisors (349724071621).

1151173981979 is a wasteful number, since it uses less digits than its factorization.

1151173981979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108332 (or 1108325 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 62.

The spelling of 1151173981979 in words is "one trillion, one hundred fifty-one billion, one hundred seventy-three million, nine hundred eighty-one thousand, nine hundred seventy-nine".