130405100505 has 32 divisors (see below), whose sum is σ = 222661177344. Its totient is φ = 64942811136.

The previous prime is 130405100503. The next prime is 130405100591. The reversal of 130405100505 is 505001504031.

It is not a de Polignac number, because 130405100505 - 2¹ = 130405100503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130405100503) 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, 1980972 + ... + 2045741.

It is an arithmetic number, because the mean of its divisors is an integer number (6958161792).

Almost surely, 2^130405100505 is an apocalyptic number.

130405100505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130405100505 is a deficient number, since it is larger than the sum of its proper divisors (92256076839).

130405100505 is a wasteful number, since it uses less digits than its factorization.

130405100505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026865.

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 130405100505 its reverse (505001504031), we get a palindrome (635406604536).

The spelling of 130405100505 in words is "one hundred thirty billion, four hundred five million, one hundred thousand, five hundred five".