155061651613 has 24 divisors (see below), whose sum is σ = 175108181976. Its totient is φ = 137106668160.

The previous prime is 155061651611. The next prime is 155061651617. The reversal of 155061651613 is 316156160551.

It can be written as a sum of positive squares in 4 ways, for example, as 25535081209 + 129526570404 = 159797^2 + 359898^2 .

It is not a de Polignac number, because 155061651613 - 2¹ = 155061651611 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 (155061651611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19681431 + ... + 19689307.

It is an arithmetic number, because the mean of its divisors is an integer number (7296174249).

Almost surely, 2^155061651613 is an apocalyptic number.

It is an amenable number.

155061651613 is a deficient number, since it is larger than the sum of its proper divisors (20046530363).

155061651613 is a wasteful number, since it uses less digits than its factorization.

155061651613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12333 (or 12322 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 155061651613 in words is "one hundred fifty-five billion, sixty-one million, six hundred fifty-one thousand, six hundred thirteen".