155054116121263 has 4 divisors (see below), whose sum is σ = 155058343715160. Its totient is φ = 155049888527368.

The previous prime is 155054116121251. The next prime is 155054116121279. The reversal of 155054116121263 is 362121611450551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155054116121263 is a prime.

It is a super-3 number, since 3×155054116121263³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155054116124263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2113741933 + ... + 2113815286.

It is an arithmetic number, because the mean of its divisors is an integer number (38764585928790).

Almost surely, 2^{155054116121263} is an apocalyptic number.

155054116121263 is a deficient number, since it is larger than the sum of its proper divisors (4227593897).

155054116121263 is an equidigital number, since it uses as much as digits as its factorization.

155054116121263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227593896.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 155054116121263 in words is "one hundred fifty-five trillion, fifty-four billion, one hundred sixteen million, one hundred twenty-one thousand, two hundred sixty-three".