155871580387 has 8 divisors (see below), whose sum is σ = 158522212800. Its totient is φ = 153221239464.

The previous prime is 155871580379. The next prime is 155871580399. The reversal of 155871580387 is 783085178551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155871580387 - 2³ = 155871580379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155871584387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190164 + ... + 1314622.

It is an arithmetic number, because the mean of its divisors is an integer number (19815276600).

Almost surely, 2^155871580387 is an apocalyptic number.

155871580387 is a deficient number, since it is larger than the sum of its proper divisors (2650632413).

155871580387 is a wasteful number, since it uses less digits than its factorization.

155871580387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145745.

The product of its (nonzero) digits is 9408000, while the sum is 58.

The spelling of 155871580387 in words is "one hundred fifty-five billion, eight hundred seventy-one million, five hundred eighty thousand, three hundred eighty-seven".