2661127554272 has 48 divisors (see below), whose sum is σ = 5736623180400. Its totient is φ = 1205106723840.

The previous prime is 2661127554257. The next prime is 2661127554289. The reversal of 2661127554272 is 2724557211662.

It is a self number, because there is not a number n which added to its sum of digits gives 2661127554272.

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 7 ways as a sum of consecutive naturals, for example, 13957397 + ... + 14146772.

It is an arithmetic number, because the mean of its divisors is an integer number (119512982925).

Almost surely, 2^{2661127554272} is an apocalyptic number.

2661127554272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2661127554272 is an abundant number, since it is smaller than the sum of its proper divisors (3075495626128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2661127554272 is a wasteful number, since it uses less digits than its factorization.

2661127554272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28104459 (or 28104451 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 50.

The spelling of 2661127554272 in words is "two trillion, six hundred sixty-one billion, one hundred twenty-seven million, five hundred fifty-four thousand, two hundred seventy-two".