155411064643555 has 32 divisors (see below), whose sum is σ = 215721484038144. Its totient is φ = 105274651591296.

The previous prime is 155411064643519. The next prime is 155411064643573. The reversal of 155411064643555 is 555346460114551.

It is a cyclic number.

It is not a de Polignac number, because 155411064643555 - 2³⁷ = 155273625690083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155411064643496 and 155411064643505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31835557 + ... + 36391273.

It is an arithmetic number, because the mean of its divisors is an integer number (6741296376192).

Almost surely, 2^{155411064643555} is an apocalyptic number.

155411064643555 is a deficient number, since it is larger than the sum of its proper divisors (60310419394589).

155411064643555 is a wasteful number, since it uses less digits than its factorization.

155411064643555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567555.

The product of its (nonzero) digits is 21600000, while the sum is 55.

The spelling of 155411064643555 in words is "one hundred fifty-five trillion, four hundred eleven billion, sixty-four million, six hundred forty-three thousand, five hundred fifty-five".