155554056365 has 4 divisors (see below), whose sum is σ = 186664867644. Its totient is φ = 124443245088.

The previous prime is 155554056349. The next prime is 155554056401. The reversal of 155554056365 is 563650455551.

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 94889873764 + 60664182601 = 308042^2 + 246301^2 .

It is a cyclic number.

It is not a de Polignac number, because 155554056365 - 2⁴ = 155554056349 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 15555405632 + ... + 15555405641.

It is an arithmetic number, because the mean of its divisors is an integer number (46666216911).

Almost surely, 2^155554056365 is an apocalyptic number.

It is an amenable number.

155554056365 is a deficient number, since it is larger than the sum of its proper divisors (31110811279).

155554056365 is an equidigital number, since it uses as much as digits as its factorization.

155554056365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31110811278.

The product of its (nonzero) digits is 6750000, while the sum is 50.

The spelling of 155554056365 in words is "one hundred fifty-five billion, five hundred fifty-four million, fifty-six thousand, three hundred sixty-five".