2651021010551 has 4 divisors (see below), whose sum is σ = 2652177149352. Its totient is φ = 2649864871752.

The previous prime is 2651021010509. The next prime is 2651021010553. The reversal of 2651021010551 is 1550101201562.

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

It is a cyclic number.

It is not a de Polignac number, because 2651021010551 - 2¹⁸ = 2651020748407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651021010553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 578065961 + ... + 578070546.

It is an arithmetic number, because the mean of its divisors is an integer number (663044287338).

Almost surely, 2^{2651021010551} is an apocalyptic number.

2651021010551 is a deficient number, since it is larger than the sum of its proper divisors (1156138801).

2651021010551 is a wasteful number, since it uses less digits than its factorization.

2651021010551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156138800.

The product of its (nonzero) digits is 3000, while the sum is 29.

The spelling of 2651021010551 in words is "two trillion, six hundred fifty-one billion, twenty-one million, ten thousand, five hundred fifty-one".