154442140720 has 80 divisors (see below), whose sum is σ = 410482209600. Its totient is φ = 52937736192.

The previous prime is 154442140693. The next prime is 154442140729. The reversal of 154442140720 is 27041244451.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (154442140729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2233384 + ... + 2301496.

It is an arithmetic number, because the mean of its divisors is an integer number (5131027620).

Almost surely, 2^154442140720 is an apocalyptic number.

154442140720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154442140720 is an abundant number, since it is smaller than the sum of its proper divisors (256040068880).

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

154442140720 is a wasteful number, since it uses less digits than its factorization.

154442140720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72182 (or 72176 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The spelling of 154442140720 in words is "one hundred fifty-four billion, four hundred forty-two million, one hundred forty thousand, seven hundred twenty".