154420231844 has 12 divisors (see below), whose sum is σ = 271157712924. Its totient is φ = 76946599584.

The previous prime is 154420231817. The next prime is 154420231877. The reversal of 154420231844 is 448132024451.

It can be written as a sum of positive squares in 2 ways, for example, as 72206138944 + 82214092900 = 268712^2 + 286730^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154420231798 and 154420231807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65877767 + ... + 65880110.

It is an arithmetic number, because the mean of its divisors is an integer number (22596476077).

Almost surely, 2^154420231844 is an apocalyptic number.

It is an amenable number.

154420231844 is a deficient number, since it is larger than the sum of its proper divisors (116737481080).

154420231844 is a wasteful number, since it uses less digits than its factorization.

154420231844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131758174 (or 131758172 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 38.

The spelling of 154420231844 in words is "one hundred fifty-four billion, four hundred twenty million, two hundred thirty-one thousand, eight hundred forty-four".