2721878122472 has 32 divisors (see below), whose sum is σ = 5605698657600. Its totient is φ = 1233253701504.

The previous prime is 2721878122409. The next prime is 2721878122499. The reversal of 2721878122472 is 2742218781272.

It is a happy number.

It is a super-4 number, since 4×2721878122472⁴ (a number of 51 digits) contains 4444 as substring.

It is an unprimeable number.

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, 389281133 + ... + 389288124.

It is an arithmetic number, because the mean of its divisors is an integer number (175178083050).

Almost surely, 2^{2721878122472} is an apocalyptic number.

It is an amenable number.

2721878122472 is an abundant number, since it is smaller than the sum of its proper divisors (2883820535128).

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

2721878122472 is a wasteful number, since it uses less digits than its factorization.

2721878122472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778569305 (or 778569301 counting only the distinct ones).

The product of its digits is 2809856, while the sum is 53.

The spelling of 2721878122472 in words is "two trillion, seven hundred twenty-one billion, eight hundred seventy-eight million, one hundred twenty-two thousand, four hundred seventy-two".