155402445384 has 24 divisors (see below), whose sum is σ = 420881623110. Its totient is φ = 51800815104.

The previous prime is 155402445347. The next prime is 155402445431. The reversal of 155402445384 is 483544204551.

155402445384 is a `hidden beast` number, since 1 + 5 + 540 + 24 + 4 + 5 + 3 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 134118553284 + 21283892100 = 366222^2 + 145890^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1079183577 + ... + 1079183720.

Almost surely, 2^155402445384 is an apocalyptic number.

It is an amenable number.

155402445384 is an abundant number, since it is smaller than the sum of its proper divisors (265479177726).

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

155402445384 is a wasteful number, since it uses less digits than its factorization.

155402445384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158367309 (or 2158367302 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 45.

The spelling of 155402445384 in words is "one hundred fifty-five billion, four hundred two million, four hundred forty-five thousand, three hundred eighty-four".