155105661110 has 32 divisors (see below), whose sum is σ = 281797088832. Its totient is φ = 61463485440.

The previous prime is 155105661107. The next prime is 155105661119. The reversal of 155105661110 is 11166501551.

It is a super-2 number, since 2×155105661110² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155105661119) 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, 2382695 + ... + 2446925.

It is an arithmetic number, because the mean of its divisors is an integer number (8806159026).

Almost surely, 2^155105661110 is an apocalyptic number.

155105661110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155105661110 is a deficient number, since it is larger than the sum of its proper divisors (126691427722).

155105661110 is a wasteful number, since it uses less digits than its factorization.

155105661110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66488.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 155105661110 in words is "one hundred fifty-five billion, one hundred five million, six hundred sixty-one thousand, one hundred ten".