12721042955 has 8 divisors (see below), whose sum is σ = 15267742704. Its totient is φ = 10175173600.

The previous prime is 12721042951. The next prime is 12721042991. The reversal of 12721042955 is 55924012721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12721042955 - 2² = 12721042951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12721042951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173381 + ... + 235590.

It is an arithmetic number, because the mean of its divisors is an integer number (1908467838).

Almost surely, 2^12721042955 is an apocalyptic number.

12721042955 is a deficient number, since it is larger than the sum of its proper divisors (2546699749).

12721042955 is an equidigital number, since it uses as much as digits as its factorization.

12721042955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415197.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 12721042955 in words is "twelve billion, seven hundred twenty-one million, forty-two thousand, nine hundred fifty-five".