155611151016061 has 16 divisors (see below), whose sum is σ = 171669222950400. Its totient is φ = 140137102673280.

The previous prime is 155611151016019. The next prime is 155611151016109. The reversal of 155611151016061 is 160610151116551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 155611151016061 - 2⁷ = 155611151015933 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 (155611151016361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274851276 + ... + 275416858.

It is an arithmetic number, because the mean of its divisors is an integer number (10729326434400).

Almost surely, 2^{155611151016061} is an apocalyptic number.

It is an amenable number.

155611151016061 is a deficient number, since it is larger than the sum of its proper divisors (16058071934339).

155611151016061 is a wasteful number, since it uses less digits than its factorization.

155611151016061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081836.

The product of its (nonzero) digits is 27000, while the sum is 40.

The spelling of 155611151016061 in words is "one hundred fifty-five trillion, six hundred eleven billion, one hundred fifty-one million, sixteen thousand, sixty-one".