26778789152066 has 32 divisors (see below), whose sum is σ = 48608094608640. Its totient is φ = 10801257993216.

The previous prime is 26778789152051. The next prime is 26778789152107. The reversal of 26778789152066 is 66025198787762.

It is a junction number, because it is equal to n+sod(n) for n = 26778789151984 and 26778789152002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8257811 + ... + 11033993.

It is an arithmetic number, because the mean of its divisors is an integer number (1519002956520).

Almost surely, 2^{26778789152066} is an apocalyptic number.

26778789152066 is a deficient number, since it is larger than the sum of its proper divisors (21829305456574).

26778789152066 is a wasteful number, since it uses less digits than its factorization.

26778789152066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816738.

The product of its (nonzero) digits is 853493760, while the sum is 74.

The spelling of 26778789152066 in words is "twenty-six trillion, seven hundred seventy-eight billion, seven hundred eighty-nine million, one hundred fifty-two thousand, sixty-six".