2651561551365 has 16 divisors (see below), whose sum is σ = 4244841153216. Its totient is φ = 1413385270400.

The previous prime is 2651561551271. The next prime is 2651561551417. The reversal of 2651561551365 is 5631551651562.

It is not a de Polignac number, because 2651561551365 - 2¹⁶ = 2651561485829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48777576 + ... + 48831905.

It is an arithmetic number, because the mean of its divisors is an integer number (265302572076).

Almost surely, 2^{2651561551365} is an apocalyptic number.

It is an amenable number.

2651561551365 is a deficient number, since it is larger than the sum of its proper divisors (1593279601851).

2651561551365 is a wasteful number, since it uses less digits than its factorization.

2651561551365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97611300.

The product of its digits is 4050000, while the sum is 51.

The spelling of 2651561551365 in words is "two trillion, six hundred fifty-one billion, five hundred sixty-one million, five hundred fifty-one thousand, three hundred sixty-five".