154393981079 has 8 divisors (see below), whose sum is σ = 176051055600. Its totient is φ = 134134137216.

The previous prime is 154393981073. The next prime is 154393981111. The reversal of 154393981079 is 970189393451.

154393981079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154393981079 - 2⁸ = 154393980823 is a prime.

It is a super-2 number, since 2×154393981079² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154393981073) 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 7 ways as a sum of consecutive naturals, for example, 349307429 + ... + 349307870.

It is an arithmetic number, because the mean of its divisors is an integer number (22006381950).

Almost surely, 2^154393981079 is an apocalyptic number.

154393981079 is a deficient number, since it is larger than the sum of its proper divisors (21657074521).

154393981079 is a wasteful number, since it uses less digits than its factorization.

154393981079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698615329.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 154393981079 in words is "one hundred fifty-four billion, three hundred ninety-three million, nine hundred eighty-one thousand, seventy-nine".