12272362477 has 8 divisors (see below), whose sum is σ = 12935087640. Its totient is φ = 11625606720.

The previous prime is 12272362469. The next prime is 12272362481. The reversal of 12272362477 is 77426327221.

It can be written as a sum of positive squares in 4 ways, for example, as 421645156 + 11850717321 = 20534^2 + 108861^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12272362477 - 2³ = 12272362469 is a prime.

It is a super-2 number, since 2×12272362477² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272362777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3990774 + ... + 3993847.

It is an arithmetic number, because the mean of its divisors is an integer number (1616885955).

Almost surely, 2^12272362477 is an apocalyptic number.

It is an amenable number.

12272362477 is a deficient number, since it is larger than the sum of its proper divisors (662725163).

12272362477 is an equidigital number, since it uses as much as digits as its factorization.

12272362477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984703.

The product of its digits is 395136, while the sum is 43.

Adding to 12272362477 its reverse (77426327221), we get a palindrome (89698689698).

The spelling of 12272362477 in words is "twelve billion, two hundred seventy-two million, three hundred sixty-two thousand, four hundred seventy-seven".