2116710521654 has 16 divisors (see below), whose sum is σ = 3273223032576. Its totient is φ = 1025965012800.

The previous prime is 2116710521599. The next prime is 2116710521669. The reversal of 2116710521654 is 4561250176112.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82195862 + ... + 82221609.

It is an arithmetic number, because the mean of its divisors is an integer number (204576439536).

Almost surely, 2^{2116710521654} is an apocalyptic number.

2116710521654 is a deficient number, since it is larger than the sum of its proper divisors (1156512510922).

2116710521654 is a wasteful number, since it uses less digits than its factorization.

2116710521654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164417671.

The product of its (nonzero) digits is 100800, while the sum is 41.

Adding to 2116710521654 its reverse (4561250176112), we get a palindrome (6677960697766).

The spelling of 2116710521654 in words is "two trillion, one hundred sixteen billion, seven hundred ten million, five hundred twenty-one thousand, six hundred fifty-four".