155470077085 has 4 divisors (see below), whose sum is σ = 186564092508. Its totient is φ = 124376061664.

The previous prime is 155470077079. The next prime is 155470077167. The reversal of 155470077085 is 580770074551.

155470077085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118475016804 + 36995060281 = 344202^2 + 192341^2 .

It is a cyclic number.

It is not a de Polignac number, because 155470077085 - 2²⁵ = 155436522653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15547007704 + ... + 15547007713.

It is an arithmetic number, because the mean of its divisors is an integer number (46641023127).

Almost surely, 2^155470077085 is an apocalyptic number.

It is an amenable number.

155470077085 is a deficient number, since it is larger than the sum of its proper divisors (31094015423).

155470077085 is an equidigital number, since it uses as much as digits as its factorization.

155470077085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31094015422.

The product of its (nonzero) digits is 1372000, while the sum is 49.

The spelling of 155470077085 in words is "one hundred fifty-five billion, four hundred seventy million, seventy-seven thousand, eighty-five".