154420005553 has 6 divisors (see below), whose sum is σ = 169734386402. Its totient is φ = 140381823120.

The previous prime is 154420005541. The next prime is 154420005557. The reversal of 154420005553 is 355500024451.

It can be written as a sum of positive squares in only one way, i.e., 129479068224 + 24940937329 = 359832^2 + 157927^2 .

It is a de Polignac number, because none of the positive numbers 2^k-154420005553 is a prime.

It is a super-2 number, since 2×154420005553² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154420005557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 638099076 + ... + 638099317.

Almost surely, 2^154420005553 is an apocalyptic number.

It is an amenable number.

154420005553 is a deficient number, since it is larger than the sum of its proper divisors (15314380849).

154420005553 is a wasteful number, since it uses less digits than its factorization.

154420005553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276198415 (or 1276198404 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 154420005553 in words is "one hundred fifty-four billion, four hundred twenty million, five thousand, five hundred fifty-three".