2651217105021 has 8 divisors (see below), whose sum is σ = 3557471784864. Its totient is φ = 1756220247600.

The previous prime is 2651217105013. The next prime is 2651217105107. The reversal of 2651217105021 is 1205017121562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2651217105021 - 2³ = 2651217105013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651217105421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2814455055 + ... + 2814455996.

It is an arithmetic number, because the mean of its divisors is an integer number (444683973108).

Almost surely, 2^{2651217105021} is an apocalyptic number.

It is an amenable number.

2651217105021 is a deficient number, since it is larger than the sum of its proper divisors (906254679843).

2651217105021 is a wasteful number, since it uses less digits than its factorization.

2651217105021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628911211.

The product of its (nonzero) digits is 8400, while the sum is 33.

The spelling of 2651217105021 in words is "two trillion, six hundred fifty-one billion, two hundred seventeen million, one hundred five thousand, twenty-one".