155615506166 has 16 divisors (see below), whose sum is σ = 235173777408. Its totient is φ = 77225145000.

The previous prime is 155615506127. The next prime is 155615506169. The reversal of 155615506166 is 661605516551.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155615506166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155615506169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123761 + ... + 571443.

It is an arithmetic number, because the mean of its divisors is an integer number (14698361088).

Almost surely, 2^155615506166 is an apocalyptic number.

155615506166 is a deficient number, since it is larger than the sum of its proper divisors (79558271242).

155615506166 is a wasteful number, since it uses less digits than its factorization.

155615506166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448987.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 155615506166 in words is "one hundred fifty-five billion, six hundred fifteen million, five hundred six thousand, one hundred sixty-six".