155216606612551 has 6 divisors (see below), whose sum is σ = 170609989086656. Its totient is φ = 141106006011300.

The previous prime is 155216606612479. The next prime is 155216606612603.

155216606612551 is nontrivially palindromic in base 10.

155216606612551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155216606612551 - 2²⁹ = 155216069741639 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 (155216606619551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 641390936295 + ... + 641390936536.

Almost surely, 2^{155216606612551} is an apocalyptic number.

155216606612551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155216606612551 is a deficient number, since it is larger than the sum of its proper divisors (15393382474105).

155216606612551 is a wasteful number, since it uses less digits than its factorization.

155216606612551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282781872853 (or 1282781872842 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 52.

The spelling of 155216606612551 in words is "one hundred fifty-five trillion, two hundred sixteen billion, six hundred six million, six hundred twelve thousand, five hundred fifty-one".