154221614465 has 16 divisors (see below), whose sum is σ = 190048135680. Its totient is φ = 120099819840.

The previous prime is 154221614461. The next prime is 154221614483. The reversal of 154221614465 is 564416122451.

It is not a de Polignac number, because 154221614465 - 2² = 154221614461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154221614461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2721494 + ... + 2777583.

It is an arithmetic number, because the mean of its divisors is an integer number (11878008480).

Almost surely, 2^154221614465 is an apocalyptic number.

It is an amenable number.

154221614465 is a deficient number, since it is larger than the sum of its proper divisors (35826521215).

154221614465 is an equidigital number, since it uses as much as digits as its factorization.

154221614465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5499232.

The product of its digits is 230400, while the sum is 41.

The spelling of 154221614465 in words is "one hundred fifty-four billion, two hundred twenty-one million, six hundred fourteen thousand, four hundred sixty-five".