154421361444 has 108 divisors (see below), whose sum is σ = 442365560784. Its totient is φ = 41798205792.

The previous prime is 154421361431. The next prime is 154421361461. The reversal of 154421361444 is 444163124451.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 151474 + ... + 576009.

Almost surely, 2^154421361444 is an apocalyptic number.

154421361444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

154421361444 is an abundant number, since it is smaller than the sum of its proper divisors (287944199340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154421361444 is a wasteful number, since it uses less digits than its factorization.

154421361444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727542 (or 727514 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

Adding to 154421361444 its reverse (444163124451), we get a palindrome (598584485895).

The spelling of 154421361444 in words is "one hundred fifty-four billion, four hundred twenty-one million, three hundred sixty-one thousand, four hundred forty-four".