26775457761 has 64 divisors (see below), whose sum is σ = 41078016000. Its totient is φ = 15377319936.

The previous prime is 26775457757. The next prime is 26775457781. The reversal of 26775457761 is 16775457762.

It is not a de Polignac number, because 26775457761 - 2² = 26775457757 is a prime.

It is a super-2 number, since 2×26775457761² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (26775457741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15777265 + ... + 15778961.

It is an arithmetic number, because the mean of its divisors is an integer number (641844000).

Almost surely, 2^26775457761 is an apocalyptic number.

It is an amenable number.

26775457761 is a deficient number, since it is larger than the sum of its proper divisors (14302558239).

26775457761 is a wasteful number, since it uses less digits than its factorization.

26775457761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its digits is 17287200, while the sum is 57.

Subtracting from 26775457761 its reverse (16775457762), we obtain a palindrome (9999999999).

The spelling of 26775457761 in words is "twenty-six billion, seven hundred seventy-five million, four hundred fifty-seven thousand, seven hundred sixty-one".