2113678566551 has 8 divisors (see below), whose sum is σ = 2116604662560. Its totient is φ = 2110752690592.

The previous prime is 2113678566539. The next prime is 2113678566557. The reversal of 2113678566551 is 1556658763112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113678566551 - 2¹⁴ = 2113678550167 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 (2113678566557) 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, 31747085 + ... + 31813593.

It is an arithmetic number, because the mean of its divisors is an integer number (264575582820).

Almost surely, 2^{2113678566551} is an apocalyptic number.

2113678566551 is a deficient number, since it is larger than the sum of its proper divisors (2926096009).

2113678566551 is an equidigital number, since it uses as much as digits as its factorization.

2113678566551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110025.

The product of its digits is 9072000, while the sum is 56.

The spelling of 2113678566551 in words is "two trillion, one hundred thirteen billion, six hundred seventy-eight million, five hundred sixty-six thousand, five hundred fifty-one".