155279503105 has 32 divisors (see below), whose sum is σ = 197469093888. Its totient is φ = 117079972800.

The previous prime is 155279503103. The next prime is 155279503109. The reversal of 155279503105 is 501305972551.

It is not a de Polignac number, because 155279503105 - 2¹ = 155279503103 is a prime.

It is a super-2 number, since 2×155279503105² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155279503103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609240 + ... + 825670.

It is an arithmetic number, because the mean of its divisors is an integer number (6170909184).

Almost surely, 2^155279503105 is an apocalyptic number.

It is an amenable number.

155279503105 is a deficient number, since it is larger than the sum of its proper divisors (42189590783).

155279503105 is a wasteful number, since it uses less digits than its factorization.

155279503105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216597.

The product of its (nonzero) digits is 236250, while the sum is 43.

The spelling of 155279503105 in words is "one hundred fifty-five billion, two hundred seventy-nine million, five hundred three thousand, one hundred five".