13147212705 has 32 divisors (see below), whose sum is σ = 22953646080. Its totient is φ = 6372799680.

The previous prime is 13147212671. The next prime is 13147212707. The reversal of 13147212705 is 50721274131.

It is not a de Polignac number, because 13147212705 - 2¹³ = 13147204513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (13147212707) 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, 890776 + ... + 905414.

It is an arithmetic number, because the mean of its divisors is an integer number (717301440).

Almost surely, 2^13147212705 is an apocalyptic number.

13147212705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13147212705 is a deficient number, since it is larger than the sum of its proper divisors (9806433375).

13147212705 is a wasteful number, since it uses less digits than its factorization.

13147212705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101.

The product of its (nonzero) digits is 11760, while the sum is 33.

Adding to 13147212705 its reverse (50721274131), we get a palindrome (63868486836).

The spelling of 13147212705 in words is "thirteen billion, one hundred forty-seven million, two hundred twelve thousand, seven hundred five".