154394493451 has 8 divisors (see below), whose sum is σ = 170097985008. Its totient is φ = 138968940000.

The previous prime is 154394493443. The next prime is 154394493457.

154394493451 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 154394493451 - 2³ = 154394493443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154394493457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69483360 + ... + 69485581.

It is an arithmetic number, because the mean of its divisors is an integer number (21262248126).

Almost surely, 2^154394493451 is an apocalyptic number.

154394493451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154394493451 is a deficient number, since it is larger than the sum of its proper divisors (15703491557).

154394493451 is a wasteful number, since it uses less digits than its factorization.

154394493451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138969053.

The product of its digits is 4665600, while the sum is 52.

The spelling of 154394493451 in words is "one hundred fifty-four billion, three hundred ninety-four million, four hundred ninety-three thousand, four hundred fifty-one".