26720218220511 has 16 divisors (see below), whose sum is σ = 37736847993600. Its totient is φ = 16759321795968.

The previous prime is 26720218220473. The next prime is 26720218220609. The reversal of 26720218220511 is 11502281202762.

It is not a de Polignac number, because 26720218220511 - 2¹⁵ = 26720218187743 is a prime.

It is a super-2 number, since 2×26720218220511² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26720218220511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26720218220911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98383731 + ... + 98654948.

It is an arithmetic number, because the mean of its divisors is an integer number (2358552999600).

Almost surely, 2^{26720218220511} is an apocalyptic number.

26720218220511 is a deficient number, since it is larger than the sum of its proper divisors (11016629773089).

26720218220511 is a wasteful number, since it uses less digits than its factorization.

26720218220511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197041358.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 26720218220511 in words is "twenty-six trillion, seven hundred twenty billion, two hundred eighteen million, two hundred twenty thousand, five hundred eleven".