154783987383 has 4 divisors (see below), whose sum is σ = 206378649848. Its totient is φ = 103189324920.

The previous prime is 154783987373. The next prime is 154783987439. The reversal of 154783987383 is 383789387451.

It is a happy number.

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

It is not a de Polignac number, because 154783987383 - 2¹² = 154783983287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154783987373) 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, 25797331228 + ... + 25797331233.

It is an arithmetic number, because the mean of its divisors is an integer number (51594662462).

Almost surely, 2^154783987383 is an apocalyptic number.

154783987383 is a deficient number, since it is larger than the sum of its proper divisors (51594662465).

154783987383 is an equidigital number, since it uses as much as digits as its factorization.

154783987383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51594662464.

The product of its digits is 121927680, while the sum is 66.

The spelling of 154783987383 in words is "one hundred fifty-four billion, seven hundred eighty-three million, nine hundred eighty-seven thousand, three hundred eighty-three".