155470078487 has 4 divisors (see below), whose sum is σ = 155480421720. Its totient is φ = 155459735256.

The previous prime is 155470078469. The next prime is 155470078499. The reversal of 155470078487 is 784870074551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784870074551 = 152003 ⋅5163517.

It is a cyclic number.

It is not a de Polignac number, because 155470078487 - 2¹⁴ = 155470062103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155470078457) 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 3 ways as a sum of consecutive naturals, for example, 5149037 + ... + 5179142.

It is an arithmetic number, because the mean of its divisors is an integer number (38870105430).

Almost surely, 2^155470078487 is an apocalyptic number.

155470078487 is a deficient number, since it is larger than the sum of its proper divisors (10343233).

155470078487 is a wasteful number, since it uses less digits than its factorization.

155470078487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343232.

The product of its (nonzero) digits is 8780800, while the sum is 56.

The spelling of 155470078487 in words is "one hundred fifty-five billion, four hundred seventy million, seventy-eight thousand, four hundred eighty-seven".