2511221651072 has 16 divisors (see below), whose sum is σ = 5002824383250. Its totient is φ = 1255610825472.

The previous prime is 2511221651027. The next prime is 2511221651149. The reversal of 2511221651072 is 2701561221152.

It can be written as a sum of positive squares in only one way, i.e., 2485869368896 + 25352282176 = 1576664^2 + 159224^2 .

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 9809459447 + ... + 9809459702.

Almost surely, 2^{2511221651072} is an apocalyptic number.

It is an amenable number.

2511221651072 is a deficient number, since it is larger than the sum of its proper divisors (2491602732178).

2511221651072 is an equidigital number, since it uses as much as digits as its factorization.

2511221651072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19618919163 (or 19618919151 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 2511221651072 in words is "two trillion, five hundred eleven billion, two hundred twenty-one million, six hundred fifty-one thousand, seventy-two".