155054116121405 has 16 divisors (see below), whose sum is σ = 191110388770560. Its totient is φ = 120680244764352.

The previous prime is 155054116121381. The next prime is 155054116121503. The reversal of 155054116121405 is 504121611450551.

It is a cyclic number.

It is not a de Polignac number, because 155054116121405 - 2⁶ = 155054116121341 is a prime.

It is a super-3 number, since 3×155054116121405³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34423925 + ... + 38666714.

It is an arithmetic number, because the mean of its divisors is an integer number (11944399298160).

Almost surely, 2^{155054116121405} is an apocalyptic number.

It is an amenable number.

155054116121405 is a deficient number, since it is larger than the sum of its proper divisors (36056272649155).

155054116121405 is a wasteful number, since it uses less digits than its factorization.

155054116121405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73102148.

The product of its (nonzero) digits is 120000, while the sum is 41.

Adding to 155054116121405 its reverse (504121611450551), we get a palindrome (659175727571956).

The spelling of 155054116121405 in words is "one hundred fifty-five trillion, fifty-four billion, one hundred sixteen million, one hundred twenty-one thousand, four hundred five".