2113511637651 has 8 divisors (see below), whose sum is σ = 2853686599680. Its totient is φ = 1391172217032.

The previous prime is 2113511637649. The next prime is 2113511637719. The reversal of 2113511637651 is 1567361153112.

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

It is not a de Polignac number, because 2113511637651 - 2¹ = 2113511637649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113511637851) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4458885075 + ... + 4458885548.

It is an arithmetic number, because the mean of its divisors is an integer number (356710824960).

Almost surely, 2^{2113511637651} is an apocalyptic number.

2113511637651 is a deficient number, since it is larger than the sum of its proper divisors (740174962029).

2113511637651 is an equidigital number, since it uses as much as digits as its factorization.

2113511637651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917770705.

The product of its digits is 113400, while the sum is 42.

The spelling of 2113511637651 in words is "two trillion, one hundred thirteen billion, five hundred eleven million, six hundred thirty-seven thousand, six hundred fifty-one".