26768426851655 has 16 divisors (see below), whose sum is σ = 34014247346304. Its totient is φ = 20153510592000.

The previous prime is 26768426851651. The next prime is 26768426851657. The reversal of 26768426851655 is 55615862486762.

It is not a de Polignac number, because 26768426851655 - 2² = 26768426851651 is a prime.

It is a super-2 number, since 2×26768426851655² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26768426851651) 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, 10913471 + ... + 13139280.

It is an arithmetic number, because the mean of its divisors is an integer number (2125890459144).

Almost surely, 2^{26768426851655} is an apocalyptic number.

26768426851655 is a deficient number, since it is larger than the sum of its proper divisors (7245820494649).

26768426851655 is a wasteful number, since it uses less digits than its factorization.

26768426851655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24065866.

The product of its digits is 1161216000, while the sum is 71.

The spelling of 26768426851655 in words is "twenty-six trillion, seven hundred sixty-eight billion, four hundred twenty-six million, eight hundred fifty-one thousand, six hundred fifty-five".