2651560653551 has 4 divisors (see below), whose sum is σ = 2675025792192. Its totient is φ = 2628095514912.

The previous prime is 2651560653491. The next prime is 2651560653563. The reversal of 2651560653551 is 1553560651562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2651560653551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2651560653551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651560613551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11732569151 + ... + 11732569376.

It is an arithmetic number, because the mean of its divisors is an integer number (668756448048).

Almost surely, 2^{2651560653551} is an apocalyptic number.

2651560653551 is a deficient number, since it is larger than the sum of its proper divisors (23465138641).

2651560653551 is a wasteful number, since it uses less digits than its factorization.

2651560653551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23465138640.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 2651560653551 in words is "two trillion, six hundred fifty-one billion, five hundred sixty million, six hundred fifty-three thousand, five hundred fifty-one".