154248403639 has 4 divisors (see below), whose sum is σ = 168270985800. Its totient is φ = 140225821480.

The previous prime is 154248403633. The next prime is 154248403739. The reversal of 154248403639 is 936304842451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 154248403639 - 2³⁵ = 119888665271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154248403592 and 154248403601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154248403633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7011291064 + ... + 7011291085.

It is an arithmetic number, because the mean of its divisors is an integer number (42067746450).

Almost surely, 2^154248403639 is an apocalyptic number.

154248403639 is a deficient number, since it is larger than the sum of its proper divisors (14022582161).

154248403639 is a wasteful number, since it uses less digits than its factorization.

154248403639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14022582160.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 154248403639 in words is "one hundred fifty-four billion, two hundred forty-eight million, four hundred three thousand, six hundred thirty-nine".