15212545205 has 16 divisors (see below), whose sum is σ = 21446498304. Its totient is φ = 10212617280.

The previous prime is 15212545189. The next prime is 15212545241. The reversal of 15212545205 is 50254521251.

It is a happy number.

15212545205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15212545205 - 2⁴ = 15212545189 is a prime.

It is a super-2 number, since 2×15212545205² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10637429 + ... + 10638858.

It is an arithmetic number, because the mean of its divisors is an integer number (1340406144).

Almost surely, 2^15212545205 is an apocalyptic number.

It is an amenable number.

15212545205 is a deficient number, since it is larger than the sum of its proper divisors (6233953099).

15212545205 is a wasteful number, since it uses less digits than its factorization.

15212545205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21276316.

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 15212545205 in words is "fifteen billion, two hundred twelve million, five hundred forty-five thousand, two hundred five".