101530403511205 has 4 divisors (see below), whose sum is σ = 121836484213452. Its totient is φ = 81224322808960.

The previous prime is 101530403511169. The next prime is 101530403511233. The reversal of 101530403511205 is 502115304035101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24813160400961 + 76717243110244 = 4981281^2 + 8758838^2 .

It is not a de Polignac number, because 101530403511205 - 2¹⁹ = 101530402986917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10153040351116 + ... + 10153040351125.

It is an arithmetic number, because the mean of its divisors is an integer number (30459121053363).

Almost surely, 2^{101530403511205} is an apocalyptic number.

It is an amenable number.

101530403511205 is a deficient number, since it is larger than the sum of its proper divisors (20306080702247).

101530403511205 is an equidigital number, since it uses as much as digits as its factorization.

101530403511205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20306080702246.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 101530403511205 its reverse (502115304035101), we get a palindrome (603645707546306).

The spelling of 101530403511205 in words is "one hundred one trillion, five hundred thirty billion, four hundred three million, five hundred eleven thousand, two hundred five".