154080978493 has 8 divisors (see below), whose sum is σ = 166038471200. Its totient is φ = 142138501488.

The previous prime is 154080978487. The next prime is 154080978503. The reversal of 154080978493 is 394879080451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154080978493 is a prime.

It is the 392532-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154080978463) by changing a digit.

It is a nontrivial repunit in base 392531.

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 7 ways as a sum of consecutive naturals, for example, 3732603 + ... + 3773656.

It is an arithmetic number, because the mean of its divisors is an integer number (20754808900).

Almost surely, 2^154080978493 is an apocalyptic number.

154080978493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

154080978493 is a deficient number, since it is larger than the sum of its proper divisors (11957492707).

154080978493 is a wasteful number, since it uses less digits than its factorization.

154080978493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507851.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 154080978493 in words is "one hundred fifty-four billion, eighty million, nine hundred seventy-eight thousand, four hundred ninety-three".