120878181511689 has 64 divisors (see below), whose sum is σ = 185097601953792. Its totient is φ = 68735598624000.

The previous prime is 120878181511679. The next prime is 120878181511721. The reversal of 120878181511689 is 986115181878021.

It is not a de Polignac number, because 120878181511689 - 2⁷ = 120878181511561 is a prime.

It is a super-2 number, since 2×120878181511689² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120878181511639) 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, 19505916139 + ... + 19505922335.

It is an arithmetic number, because the mean of its divisors is an integer number (2892150030528).

Almost surely, 2^{120878181511689} is an apocalyptic number.

It is an amenable number.

120878181511689 is a deficient number, since it is larger than the sum of its proper divisors (64219420442103).

120878181511689 is a wasteful number, since it uses less digits than its factorization.

120878181511689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10246.

The product of its (nonzero) digits is 15482880, while the sum is 66.

The spelling of 120878181511689 in words is "one hundred twenty trillion, eight hundred seventy-eight billion, one hundred eighty-one million, five hundred eleven thousand, six hundred eighty-nine".