26720066416 has 20 divisors (see below), whose sum is σ = 52245087400. Its totient is φ = 13237463232.

The previous prime is 26720066407. The next prime is 26720066449. The reversal of 26720066416 is 61466002762.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7658826 + ... + 7662313.

It is an arithmetic number, because the mean of its divisors is an integer number (2612254370).

Almost surely, 2^26720066416 is an apocalyptic number.

It is an amenable number.

26720066416 is a deficient number, since it is larger than the sum of its proper divisors (25525020984).

26720066416 is a wasteful number, since it uses less digits than its factorization.

26720066416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15321256 (or 15321250 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 26720066416 in words is "twenty-six billion, seven hundred twenty million, sixty-six thousand, four hundred sixteen".