120138861467 has 20 divisors (see below), whose sum is σ = 127989369480. Its totient is φ = 112769150208.

The previous prime is 120138861461. The next prime is 120138861539. The reversal of 120138861467 is 764168831021.

It is not a de Polignac number, because 120138861467 - 2³⁰ = 119065119643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120138861461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34993583 + ... + 34997015.

It is an arithmetic number, because the mean of its divisors is an integer number (6399468474).

Almost surely, 2^120138861467 is an apocalyptic number.

120138861467 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

120138861467 is a deficient number, since it is larger than the sum of its proper divisors (7850508013).

120138861467 is an frugal number, since it uses more digits than its factorization.

120138861467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920 (or 3869 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 120138861467 in words is "one hundred twenty billion, one hundred thirty-eight million, eight hundred sixty-one thousand, four hundred sixty-seven".