154438343834451 has 32 divisors (see below), whose sum is σ = 217440678798336. Its totient is φ = 97372261728000.

The previous prime is 154438343834449. The next prime is 154438343834479.

154438343834451 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 154438343834451 - 2¹ = 154438343834449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154438343830451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61377445 + ... + 63844086.

It is an arithmetic number, because the mean of its divisors is an integer number (6795021212448).

Almost surely, 2^{154438343834451} is an apocalyptic number.

154438343834451 is a deficient number, since it is larger than the sum of its proper divisors (63002334963885).

154438343834451 is a wasteful number, since it uses less digits than its factorization.

154438343834451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125221883.

The product of its digits is 132710400, while the sum is 60.

The spelling of 154438343834451 in words is "one hundred fifty-four trillion, four hundred thirty-eight billion, three hundred forty-three million, eight hundred thirty-four thousand, four hundred fifty-one".